Analytical Reagents

Quality Level	100
grade	matrix substance for MALDI-MS
assay	≥99.5% (HPLC), ≥99.5%
analyte chemical class(es)	glycans, lipids, peptides, proteins
application(s)	MALDI-MS: suitable
mp	156-158 °C (lit.)
solubility	dioxane: 50 mg/mL, clear
cation traces	Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg
SMILES string	CC(=O)c1c(O)cccc1O
InChI	1S/C8H8O3/c1-5(9)8-6(10)3-2-4-7(8)11/h2-4,10-11H,1H3
InChI key	YPTJKHVBDCRKNF-UHFFFAOYSA-N

Fluorescent probe DMQCOSu for analysis of aliphatic primary amines and diamines in water (tap water and river water), human urine and sera without solvent extraction. The detection limit in real samples is between 0.07–4.00 nmol/L.

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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2,6-Dimethyl-4-quinolinecarboxylic acid N-hydroxysuccinimide ester

Empirical Formula (Hill Notation):	C₁₆H₁₄N₂O₄
CAS Number:	569355-30-2
Molecular Weight:	298.29
MDL number:	MFCD16875520
PubChem Substance ID:	329757477
NACRES:	NA.22

Bottomless glass bottle. Contents are inside inserted fused cone.

Discover LiChropur reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
grade	for HPLC derivatization
assay	98.0% (HPLC)
quality	LiChropur^™
application(s)	HPLC: suitable
storage temp.	2-8°C
SMILES string	Cc1ccc2nc(C)cc(C(=O)ON3C(=O)CCC3=O)c2c1
InChI	1S/C16H14N2O4/c1-9-3-4-13-11(7-9)12(8-10(2)17-13)16(21)22-18-14(19)5-6-15(18)20/h3-4,7-8H,5-6H2,1-2H3
InChI key	HDQNGUNXGKGYSR-UHFFFAOYSA-N

Purity (GC): 99 % (a/a)
Identity (IR-spectrum): passes test
Melting point: 45 - 48 °C
Heavy metals (as Pb): 0.001 %
Fe (Iron): 0.001 %
Sulfated ash: 0.05 %
Water (according to Karl Fischer): 0.1 %

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P261 - P305 + P351 + P338
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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2,6-Dimethylphenol

Empirical Formula (Hill Notation):	C₈H₁₀O
Linear Formula:	2,6-(CH₃)₂C₆H₃OH
CAS Number:	576-26-1
Molecular Weight:	122.16
MDL number:	MFCD00002240
EC Index Number:	209-400-1

This certified eluent concentrate for ion chromatography is traceable by potentiometric titration to NIST Standard Reference Material. It is certified in accordance with ISO Guide 31. All details about exact content, uncertainty, traceability and expiry date are described in the certificate.

storage conditions	Store at +15°C to +25°C.
Quality Level	100
vapor pressure	0.2 hPa ( 20 °C)
autoignition temp.	555 °C
potency	296 mg/kg LD₅₀, oral (Rat), 1000 mg/kg LD₅₀, skin (Rabbit)
expl. lim.	1.4 % (v/v)
pH	6-7 (20 °C, 8 g/L in H₂O)
bp	203 °C
mp	42-46 °C
transition temp	flash point 73 °C
solubility	8 g/L
density	1.03 g/cm³ at 20 °C
storage temp.	15-25°C
InChI	1S/C8H10O/c1-6-4-3-5-7(2)8(6)9/h3-5,9H,1-2H3
InChI key	NXXYKOUNUYWIHA-UHFFFAOYSA-N

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2,6-Pyridinedicarboxylic acid concentrate

Empirical Formula (Hill Notation):	C₇H₅NO₄
CAS Number:	499-83-2
Molecular Weight:	167.12
MDL number:	MFCD00006299
eCl@ss:	39151816
PubChem Substance ID:	329757657
NACRES:	NB.21

Metrohm IC application note AN-C-163: Cations in brine with minimal dilution and sub-µL injection.
Metrohm IC application note AN-C-172: Cations in snow from an open field.
Metrohm IC application note AN-C-143: Ammonia in addition to standard cations in maritime pore water.

Linkage

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Preparation Note

Prepared with 2,6-pyridinecarboxylic acid and high purity water (18.2 MΩ, 0.2 μm filtered)

Quality Level	100
description	anionic
concentration	0.02 M C₇H₅NO₄ in water (0.04N)
application(s)	immunocytochemistry: suitable, ion chromatography: suitable
SMILES string	OC(=O)c1cccc(n1)C(O)=O
InChI	1S/C7H5NO4/c9-6(10)4-2-1-3-5(8-4)7(11)12/h1-3H,(H,9,10)(H,11,12)
InChI key	WJJMNDUMQPNECX-UHFFFAOYSA-N

2-(4-Hydroxyphenylazo)benzoic acid) (HABA), can be used for desorption of proteins, peptides and glycoproteins, thereby making it very advantageous for matrix-assisted laser desorption ionization mass spectrometry.

Personal Protective Equipment	Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 2
Flash Point F	Not applicable
Flash Point C	Not applicable

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2-(4-Hydroxyphenylazo)benzoic acid

Empirical Formula (Hill Notation):	C₁₃H₁₀N₂O₃
Linear Formula:	HOC₆H₄N=NC₆H₄CO₂H
CAS Number:	1634-82-8
Molecular Weight:	242.23
Beilstein/REAXYS Number:	1842696
EC Number:	216-655-2
MDL number:	MFCD00002428
PubChem Substance ID:	329758061

Quality Level	100
grade	matrix substance for MALDI-MS
assay	≥99.5% (HPLC), ≥99.5%
analyte functional class(es)	polymers
analyte chemical class(es)	glycans, peptides, proteins
application(s)	MALDI-MS: suitable
mp	204-208 °C (lit.), 204-208 °C
solubility	ethanol: 20 mg/mL, clear
cation traces	Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤50 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤100 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg
absorption	≥2000 at 337 nm (mol. absorption)
SMILES string	Oc1ccc(cc1)\N=N\c2ccccc2C(O)=O
InChI	1S/C13H10N2O3/c16-10-7-5-9(6-8-10)14-15-12-4-2-1-3-11(12)13(17)18/h1-8,16H,(H,17,18)/b15-14+
InChI key	DWQOTEPNRWVUDA-CCEZHUSRSA-N

2-(5-Bromo-2-pyridylazo)-5-[N-propyl-N-(3-sulfopropyl)amino]phenol disodium salt dihydrate may be used as a reagent for the determination of copper and iron by flow injection-catalytic photometric method using serial flow cell.

Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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2-(5-Bromo-2-pyridylazo)-5-[N-propyl-N-(3-sulfopropyl)amino]phenol disodium salt dihydrate

Empirical Formula (Hill Notation):	C₁₇H₁₉BrN₄Na₂O₄S · 2H₂O
CAS Number:	679787-08-7
Molecular Weight:	537.34
MDL number:	MFCD03791119
PubChem Substance ID:	329770275
NACRES:	NA.21

Bottomless glass bottle. Contents are inside inserted fused cone.

Reagent for the direct determination of zinc in human serum by flow-injection spectrophotometric analysis

Quality Level	100
assay	95.0% (CHN), 95.0%
quality	for spectrophotometric det. of Zn(II), Cu(II), Fe(II), Co(II), H₂O₂
application(s)	UV/Vis spectroscopy: suitable
SMILES string	O.O.[Na+].[Na+].CCCN(CCCS([O-])(=O)=O)c1ccc(\N=N\c2ccc(Br)cn2)c([O-])c1
InChI	1S/C17H21BrN4O4S.2Na.2H2O/c1-2-8-22(9-3-10-27(24,25)26)14-5-6-15(16(23)11-14)20-21-17-7-4-13(18)12-19-17;;;;/h4-7,11-12,23H,2-3,8-10H2,1H3,(H,24,25,26);;;21H2/q;2+1;;/p-2/b21-20+;;;;
InChI key	WQXVWWKVWNUTOV-MKMLRUMESA-L

2-Bromoacetophenone is a commonly used derivatization agent for fatty acid detection in biological samples.

Personal Protective Equipment	Eyeshields, Gloves, type N95 (US)
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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2-Bromoacetophenone

Empirical Formula (Hill Notation):	C₈H₇BrO
Linear Formula:	C₆H₅COCH₂Br
CAS Number:	70-11-1
Molecular Weight:	199.04
Beilstein/REAXYS Number:	606474
EC Number:	200-724-9
MDL number:	MFCD00000195
PubChem Substance ID:	329767691
NACRES:	NA.22

Preparation of crystalline esters from acids

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
grade	for GC derivatization
assay	99.0% (GC), 99.0%
quality	LiChropur^™
reaction suitability	reagent type: derivatization reagent reaction type: Acylations
application(s)	gas chromatography (GC): suitable
bp	135 °C/18 mmHg (lit.)
mp	48-51 °C (lit.), 49-50 °C
storage temp.	2-8°C
SMILES string	BrCC(=O)c1ccccc1
InChI	1S/C8H7BrO/c9-6-8(10)7-4-2-1-3-5-7/h1-5H,6H2
InChI key	LIGACIXOYTUXAW-UHFFFAOYSA-N

25, 100, 500 g in glass bottle

pictograms	GHS05
signalword	Danger
hcodes	H314
pcodes	P303 + P361 + P353 - P305 + P351 + P338
Personal Protective Equipment	Eyeshields, Faceshields, Gloves, type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
RIDADR	UN 2645 6.1 / PGII
WGK Germany	WGK 3
Flash Point F	235.4 °F - closed cup
Flash Point C	113 °C - closed cup

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2-Fluoroaniline

Empirical Formula (Hill Notation):	C₆H₆FN
Linear Formula:	FC₆H₄NH₂
CAS Number:	348-54-9
Molecular Weight:	111.12
Beilstein/REAXYS Number:	1524219
EC Number:	206-478-9
MDL number:	MFCD00007642
PubChem Substance ID:	24894844
NACRES:	NA.25

Biochem/physiol Actions

The metabolism and excretion of the xenobiotic compound 2-fluoroaniline is important due to human exposure in manufacturing. It is found to be very efficiently metabolized, primarily by 4-hydroxylation with subsequent sulfate or glucuronide formation. N-Acetylation is also observed. At least 80% of the dose is excreted in the urine within 24 hr. 2-Fluoroaniline exerts its nephrotoxic effect through 4-hyroxylation and subsequent p-benzoquinonimine formation.

Quality Level	100
assay	99%
refractive index	n20/D 1.544 (lit.)
bp	182-183 °C (lit.)
mp	29 °C (lit.)
density	1.151 g/mL at 25 °C (lit.)
SMILES string	Nc1ccccc1F
InChI	1S/C6H6FN/c7-5-3-1-2-4-6(5)8/h1-4H,8H2
InChI key	FTZQXOJYPFINKJ-UHFFFAOYSA-N

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pictograms	GHS02,GHS05,GHS07
signalword	Danger
hcodes	H226 - H302 - H315 - H318 - H335
pcodes	P261 - P280 - P305 + P351 + P338
Personal Protective Equipment	Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
RIDADR	UN 2941 6.1 / PGIII
WGK Germany	WGK 3
Flash Point F	140.0 °F - closed cup
Flash Point C	60 °C - closed cup

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2-Fluorophenyl 2-nitrophenyl ether

Empirical Formula (Hill Notation):	C₁₂H₈FNO₃
Linear Formula:	FC₆H₄OC₆H₄NO₂
CAS Number:	93974-08-4
Molecular Weight:	233.20
Beilstein/REAXYS Number:	4457734
MDL number:	MFCD00079292
PubChem Substance ID:	329757310

Plasticizer in neutral carrier based polymer membrane ion-selective electrodes

Selectophore is a trademark of Sigma-Aldrich Chemie GmbH

Quality Level	200
grade	for ion-selective electrodes
product line	Selectophore^™
assay	98.0% (GC), 98.0%
density	1.315 g/mL at 20 °C (lit.)
SMILES string	[O-][N+](=O)c1ccccc1Oc2ccccc2F
InChI	1S/C12H8FNO3/c13-9-5-1-3-7-11(9)17-12-8-4-2-6-10(12)14(15)16/h1-8H
InChI key	XVZDYNSMGNIZSS-UHFFFAOYSA-N

2-Mercaptoethanol is a thiol compound showing growth promoting properties on mouse lymphoma L1210 cells in vitro. It also enhances viability, blast transformation and antibody formation in lymphocyte cultures.

Personal Protective Equipment	Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	257.0 °F - closed cup
Flash Point C	125.00 °C - closed cup

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2-Mercaptoethanol

Empirical Formula (Hill Notation):	C₂H₆OS
Linear Formula:	HSCH₂CH₂OH
CAS Number:	60-24-2
Molecular Weight:	78.13
Beilstein/REAXYS Number:	773648
EC Number:	200-464-6
MDL number:	MFCD00004890
PubChem Substance ID:	329770550
NACRES:	NA.05

suitable for derivatisation of Amine groups
BME is suitable for reducing protein disulfide bonds prior to polyacrylamide gel electrophoresis and is usually included in a sample buffer for SDS-PAGE at a concentration of 5%. Cleaving intermolecular (between subunits) disulfide bonds allows the subunits of a protein to separate independently on SDS-PAGE. Cleaving intramolecular (within subunit) disulfide bonds allows the subunits to become completely denatured so that each peptide migrates according to its chain length with no influence due to secondary structure.

Discover LiChropur reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
grade	for HPLC derivatization
vapor density	2.69 (vs air)
vapor pressure	1 mmHg ( 20 °C)
assay	99.0% (GC)
quality	LiChropur^™
expl. lim.	18 %
concentration	14.3 M (pure liquid)
application(s)	HPLC: suitable
refractive index	n20/D 1.500 (lit.), n20/D 1.500-1.502
bp	157 °C (lit.)
density	1.114 g/mL at 25 °C (lit.)
storage temp.	2-8°C
SMILES string	OCCS
InChI	1S/C2H6OS/c3-1-2-4/h3-4H,1-2H2
InChI key	DGVVWUTYPXICAM-UHFFFAOYSA-N

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2-Nitrophenyl octyl ether (NPOE) is a solvent used generally for ion transfer in liquid/liquid interface. It shows low solubility in water, low vapour pressure and is less toxic as compared to other organic solvents. It is a good solvent to ionic solutes as it has high molar volume and medium permittivity.

pictograms	GHS05,GHS06,GHS08,GHS09
signalword	Danger
hcodes	H301 + H331 - H310 - H315 - H317 - H318 - H361fd - H373 - H410
pcodes	P201 - P262 - P280 - P301 + P310 + P330 - P302 + P352 + P310 - P305 + P351 + P338 + P310
RIDADR	UN 2966 6.1 / PGII
WGK Germany	WGK 3
Flash Point F	165.2 °F - closed cup
Flash Point C	74 °C - closed cup

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2-Nitrophenyl octyl ether

Empirical Formula (Hill Notation):	C₁₄H₂₁NO₃
Linear Formula:	O₂NC₆H₄O(CH₂)₇CH₃
CAS Number:	37682-29-4
Molecular Weight:	251.32
Beilstein/REAXYS Number:	2529905
EC Number:	253-623-7
MDL number:	MFCD00014693
PubChem Substance ID:	329765189
NACRES:	NB.61

NPOE was used as plasticizer in preparing PVC-membrane anionic-surfactants-selective electrodes.

Features and Benefits

May be used as a plasticizer for cellulose triacetate membranes providing impermeability to metal cations, but allowing anion exchange.

Selectophore is a trademark of Sigma-Aldrich Chemie GmbH

Quality Level	200
grade	for ion-selective electrodes
product line	Selectophore^™
assay	99.0% (GC), 99.0%
refractive index	n20/D 1.508 (lit.), n20/D 1.511
bp	197-198 °C/11 mmHg (lit.)
density	1.04 g/mL at 25 °C (lit.)
SMILES string	CCCCCCCCOc1ccccc1[N+]([O-])=O
InChI	1S/C14H21NO3/c1-2-3-4-5-6-9-12-18-14-11-8-7-10-13(14)15(16)17/h7-8,10-11H,2-6,9,12H2,1H3
InChI key	CXVOIIMJZFREMM-UHFFFAOYSA-N

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Personal Protective Equipment	Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	235.4 °F - closed cup
Flash Point C	113 °C - closed cup

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2-Nitrophenyl pentyl ether

Empirical Formula (Hill Notation):	C₁₁H₁₅NO₃
CAS Number:	39645-91-5
Molecular Weight:	209.24
Beilstein/REAXYS Number:	2105866
MDL number:	MFCD00142954
PubChem Substance ID:	329765198
NACRES:	NB.61

Plasticizer used in polymer membrane neutral carrier-based ion-selective electrodes

Selectophore is a trademark of Sigma-Aldrich Chemie GmbH

Quality Level	200
grade	for ion-selective electrodes
product line	Selectophore^™
assay	99.0% (GC), 99.0%
refractive index	n20/D 1.522
bp	177-178 °C/15 mmHg (lit.)
density	1.098 g/mL at 20 °C (lit.)
SMILES string	CCCCCOc1ccccc1[N+]([O-])=O
InChI	1S/C11H15NO3/c1-2-3-6-9-15-11-8-5-4-7-10(11)12(13)14/h4-5,7-8H,2-3,6,9H2,1H3
InChI key	YRVCISCRAMHCFP-UHFFFAOYSA-N

2-Picolylamine, a bihaptic nucleophile, is a bidentate ligand that is generally utilized for the preparation of various multidentate ligands and the corresponding complexes.

pictograms	GHS07
signalword	Warning
hcodes	H315
Personal Protective Equipment	Eyeshields, Gloves, type ABEK (EN14387) respirator filter
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	228.2 °F - closed cup
Flash Point C	109 °C - closed cup

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2-Picolylamine

Empirical Formula (Hill Notation):	C₆H₈N₂
CAS Number:	3731-51-9
Molecular Weight:	108.14
Beilstein/REAXYS Number:	108054
EC Number:	223-090-5
MDL number:	MFCD00006360
PubChem Substance ID:	329760075

2-Picolylamine may be used as a derivatization agent to enhance the sensitivity of carboxylic acids and short-chain fatty acids for their determination in biological samples by liquid chromatography coupled to electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS) and ultra-high performance liquid chromatography (UHPLC), respectively.

Discover LiChropur reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
grade	for HPLC derivatization
assay	98.0% (GC)
quality	LiChropur^™
application(s)	HPLC: suitable
refractive index	n20/D 1.544 (lit.), n20/D 1.545-1.547
bp	82-85 °C/12 mmHg (lit.)
density	1.049 g/mL at 25 °C (lit.)
SMILES string	NCc1ccccn1
InChI	1S/C6H8N2/c7-5-6-3-1-2-4-8-6/h1-4H,5,7H2
InChI key	WOXFMYVTSLAQMO-UHFFFAOYSA-N

2-Thenoyltrifluoroacetone may be used as a chelating agent for the speciation of chromium in water and rice samples using surfactant-assisted emulsification dispersive liquid-liquid microextraction with electrothermal atomic absorption spectrometry technique.

pictograms	GHS05
signalword	Danger
hcodes	H314
pcodes	P280 - P305 + P351 + P338 - P310
RIDADR	UN 2735PSN1 8 / PGII
WGK Germany	WGK 3
Flash Point F	210.2 °F - closed cup
Flash Point C	99 °C - closed cup

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2-Thenoyltrifluoroacetone

Empirical Formula (Hill Notation):	C₈H₅F₃O₂S
CAS Number:	326-91-0
Molecular Weight:	222.18
Beilstein/REAXYS Number:	168645
EC Number:	206-316-7
MDL number:	MFCD00005445
PubChem Substance ID:	329769643
NACRES:	NA.22

Reagent for the extraction and spectrophotometric determination of metals

Quality Level	100
assay	99.0% (GC), 99.0%
quality	for spectrophotometric det. of metal ions
reaction suitability	reagent type: derivatization reagent reaction type: Acylations
application(s)	UV/Vis spectroscopy: suitable, gas chromatography (GC): suitable
bp	96-98 °C/8 mmHg (lit.)
mp	40-44 °C (lit.), 42-46 °C
storage temp.	2-8°C
SMILES string	FC(F)(F)C(=O)CC(=O)c1cccs1
InChI	1S/C8H5F3O2S/c9-8(10,11)7(13)4-5(12)6-2-1-3-14-6/h1-3H,4H2
InChI key	TXBBUSUXYMIVOS-UHFFFAOYSA-N

Assay (acidimetric; calculated on dried substance): 99
Identity (IR-spectrum): passes test
pH-value (1%; water): 1.7 - 1.9
Loss on drying (20 mbar, 60°C): 1
Suitability as reagent (for sorbic acid): passes test

Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	233.6 °F - closed cup
Flash Point C	112 °C - closed cup

964,01 € / 91 356 ₽

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2-Thiobarbituric acid

Empirical Formula (Hill Notation):	C₄H₄N₂O₂S
CAS Number:	504-17-6
Molecular Weight:	144.15
MDL number:	MFCD00006674
EC Index Number:	207-985-8

Assay (perchloric acid titration): 99 %
Identity (IR-spectrum): conforms
Melting range: 166 - 170 °C
Loss on Drying (105°C): 0.2 %

storage conditions	Store at +15°C to +25°C.
Quality Level	100
potency	>5000 mg/kg LD₅₀, oral (Rat)
pH	1.7-1.9 (20 °C, 10 g/L in H₂O)
mp	235 °C
bulk density	210 kg/m³
storage temp.	15-25°C
InChI	1S/C4H4N2O2S/c7-2-1-3(8)6-4(9)5-2/h1H2,(H2,5,6,7,8,9)
InChI key	RVBUGGBMJDPOST-UHFFFAOYSA-N

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3,3,5,5-Tetramethylbenzidine

Empirical Formula (Hill Notation):	C₁₆H₂₀N₂
CAS Number:	54827-17-7
Molecular Weight:	240.34
MDL number:	MFCD00007748
EC Index Number:	259-364-6

3,3′-diaminobenzidine-tetrahydrochloride-dihydrate (DAB) is toxic in nature, and is one of the most potent marker being used in immunochemistry, mostly at the electron and light microscope levels.

storage conditions	Store at +15°C to +25°C.
Quality Level	100
mp	166-170 °C
bulk density	430 kg/m³
storage temp.	15-25°C
InChI	1S/C16H20N2/c1-9-5-13(6-10(2)15(9)17)14-7-11(3)16(18)12(4)8-14/h5-8H,17-18H2,1-4H3
InChI key	UAIUNKRWKOVEES-UHFFFAOYSA-N

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3,3-Diaminobenzidine tetrahydrochloride hydrate

Empirical Formula (Hill Notation):	C₁₂H₁₄N₄ · 4HCl · xH₂O
CAS Number:	868272-85-9
Molecular Weight:	360.11 (anhydrous basis)
EC Number:	231-018-9
MDL number:	MFCD08273058
PubChem Substance ID:	329754314

3,3′-diaminobenzidine-tetrahydrochloride-dihydrate (DAB) was used as a chromogen, for detecting the antigen-antibody complex.

1, 5, 25 g in glass bottle

Reagent for the spectrophotometric determination of selenium; Peroxidase stain. Differentiation between two classes of mycobacterial catalase in polyacrylamide electrophoresis gels; Specific indication of hemoproteins in polyacrylamide gels by double staining

Quality Level	100
assay	≥97.5%
quality	for spectrophotometric det. of Se
application(s)	UV/Vis spectroscopy: suitable
SMILES string	O.Cl.Cl.Cl.Cl.Nc1ccc(cc1N)-c2ccc(N)c(N)c2
InChI	1S/C12H14N4.4ClH.H2O/c13-9-3-1-7(5-11(9)15)8-2-4-10(14)12(16)6-8;;;;;/h1-6H,13-16H2;4*1H;1H2
InChI key	DXWSCXIZIHILNP-UHFFFAOYSA-N

Appearance of solution (10 g/l; ethanol): passes test
Loss on drying (110°C): 1.0 %
Suitability as indicator (for metal titration): passes test
Suitability for bromate determination in water and drinking water for Pharo- or NOVA-spectrophotometer: passes test
Application note: Method A or Method B

Method A:For the measurement the method 195, which is pre-calibrated in the Spectroquant Pharo-and NOVA-photometers can be
used. To increase the precision of the results a self-made blank according to the application is recommended generally.
Method B:For the measurement the pre-calibrated method 195 is not applicable. Instead of that, a self-made calibration according the
application is to perform.

pictograms	GHS08
signalword	Danger
hcodes	H341 - H350
pcodes	P201 - P202 - P280 - P308 + P313 - P405 - P501
Personal Protective Equipment	Eyeshields, Gloves, type N95 (US)
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3

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3,3-Dimethylnaphthidine

Empirical Formula (Hill Notation):	C₂₂H₂₀N₂
CAS Number:	13138-48-2
Molecular Weight:	312.41
MDL number:	MFCD00042706
EC Index Number:	236-069-0

3,5-Dinitrobenzoyl chloride may be used as a derivatizing agent in the analysis of biogenic amines in fermented foods using high performance liquid chromatography (HPLC).

storage conditions	Store below +30°C.
Quality Level	100
mp	228-233 °C
bulk density	380 kg/m³
storage temp.	2-30°C
InChI	1S/C22H20N2/c1-13-11-19(15-7-3-5-9-17(15)21(13)23)20-12-14(2)22(24)18-10-6-4-8-16(18)20/h3-12H,23-24H2,1-2H3
InChI key	FTEGMIZQLGXBNA-UHFFFAOYSA-N

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3,5-Dinitrobenzoyl chloride

Empirical Formula (Hill Notation):	C₇H₃ClN₂O₅
Linear Formula:	(O₂N)₂C₆H₃COCl
CAS Number:	99-33-2
Molecular Weight:	230.56
Beilstein/REAXYS Number:	990249
EC Number:	202-750-6
MDL number:	MFCD00007248
PubChem Substance ID:	329764286
NACRES:	NA.22

Discover LiChropur reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
grade	for HPLC derivatization
vapor density	7.6 (vs air)
assay	98.0% (GC), 98.0-102.0% (AT)
quality	LiChropur^™
application(s)	HPLC: suitable
bp	196 °C/11 mmHg (lit.)
mp	68-69 °C (lit.)
SMILES string	[O-][N+](=O)c1cc(cc(c1)[N+]([O-])=O)C(Cl)=O
InChI	1S/C7H3ClN2O5/c8-7(11)4-1-5(9(12)13)3-6(2-4)10(14)15/h1-3H
InChI key	NNOHXABAQAGKRZ-UHFFFAOYSA-N

3-(2-Pyridyl)-5,6-di(2-furyl)-1,2,4-triazine-5,5-disulfonic acid disodium salt also known as Ferene is a chelating agent which usually binds with Fe2+ ion to form coloured complex.

pictograms	GHS05
signalword	Danger
hcodes	H314
pcodes	P280 - P305 + P351 + P338 - P310
RIDADR	UN 3261 8 / PGII
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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3-(2-Pyridyl)-5,6-di(2-furyl)-1,2,4-triazine-5,5-disulfonic acid disodium salt

Empirical Formula (Hill Notation):	C₁₆H₈N₄Na₂O₈S₂
CAS Number:	79551-14-7
Molecular Weight:	494.37
Beilstein/REAXYS Number:	5710932
MDL number:	MFCD00040642
PubChem Substance ID:	329769271
NACRES:	NA.21

It was used in chromogen screening while studying non-transferrin-bound iron quantification. It was used in measuring the chelating activity on ferrous ions.

Colorimetric reagent for iron, which is more sensitive than other reagents (e.g. Ferrozine), molar absorptivity 35500 liters/mol cm

Quality Level	100
assay	≥99.0% (TLC), ≥99.0%
quality	for spectrophotometric det. of Fe
application(s)	UV/Vis spectroscopy: suitable
SMILES string	[Na+].[Na+].[O-]S(=O)(=O)c1ccc(o1)-c2nnc(nc2-c3ccc(o3)S([O-])(=O)=O)-c4ccccn4
InChI	1S/C16H10N4O8S2.2Na/c21-29(22,23)12-6-4-10(27-12)14-15(11-5-7-13(28-11)30(24,25)26)19-20-16(18-14)9-3-1-2-8-17-9;;/h1-8H,(H,21,22,23)(H,24,25,26);;/q;2*+1/p-2
InChI key	IVLSEFOVPQFJBB-UHFFFAOYSA-L

3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-4′,4′′-disulfonic acid sodium salt also known as Ferrozine is a chelating agent for ferrous iron.

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-4,4-disulfonic acid sodium salt

Empirical Formula (Hill Notation):	C₂₀H₁₃N₄NaO₆S₂
CAS Number:	69898-45-9
Molecular Weight:	492.46
EC Number:	274-196-3
MDL number:	MFCD00078417
PubChem Substance ID:	329769272
NACRES:	NA.21

It was used in determining of chelating activity of Fe2+ using Boyer and McCleary method.

Highly specific water-soluble reagent for the accurate determination of submicrogram levels of serum iron (pH 3.5-4.5, lmax 562 nm, A 29000)

Quality Level	100
assay	≥97.0% (T), ≥97.0%
quality	for spectrophotometric det. of Fe
application(s)	UV/Vis spectroscopy: suitable
impurities	~7% water
mp	≥300 °C
cation traces	Co: ≤50 mg/kg, Cu: ≤50 mg/kg, Fe: ≤50 mg/kg, Mo: ≤50 mg/kg, Ni: ≤50 mg/kg, V: ≤50 mg/kg, Zn: ≤50 mg/kg
SMILES string	[Na+].OS(=O)(=O)c1ccc(cc1)-c2nnc(nc2-c3ccc(cc3)S([O-])(=O)=O)-c4ccccn4
InChI	1S/C20H14N4O6S2.Na/c25-31(26,27)15-8-4-13(5-9-15)18-19(14-6-10-16(11-7-14)32(28,29)30)23-24-20(22-18)17-3-1-2-12-21-17;/h1-12H,(H,25,26,27)(H,28,29,30);/q;+1/p-1
InChI key	ZGVNYCXXBQPDPQ-UHFFFAOYSA-M

Bottomless glass bottle. Contents are inside inserted fused cone.

Personal Protective Equipment	Eyeshields, Gloves, type N95 (US)
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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3-Ferrocenylpropionic anhydride

Empirical Formula (Hill Notation):	C₂₆H₂₆Fe₂O₃
CAS Number:	132098-76-1
Molecular Weight:	498.17
MDL number:	MFCD18071429
PubChem Substance ID:	329767309
NACRES:	NA.22

Discover LiChropur reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
grade	for HPLC derivatization
assay	98.0% (C)
quality	LiChropur^™
application(s)	HPLC: suitable
SMILES string	[Fe].[Fe].[CH]1[CH][CH][CH][CH]1.[CH]2[CH][CH][CH][CH]2.O=C(CC[C]3[CH][CH][CH][CH]3)OC(=O)CC[C]4[CH][CH][CH][CH]4
InChI	1S/C16H16O3.2C5H5.2Fe/c17-15(11-9-13-5-1-2-6-13)19-16(18)12-10-14-7-3-4-8-14;21-2-4-5-3-1;;/h1-8H,9-12H2;21-5H;;
InChI key	HFIVHNMBVHEMJQ-UHFFFAOYSA-N

3-Hydroxybenzaldehyde azine may be used for kinetic photometric determination, in differential pulse anodic stripping voltammetry (DPASV) and potentiometry, done for determination of copper species in wine. It may also be used as an ionophore, during the development of an highly selective and sensitive PVC membrane sensor, which can be used as a Tb3+ ion selective electrode.

pictograms	GHS05
signalword	Danger
hcodes	H315 - H318
pcodes	P280 - P305 + P351 + P338
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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3-Hydroxybenzaldehyde azine

Empirical Formula (Hill Notation):	C₁₄H₁₂N₂O₂
CAS Number:	18428-76-7
Molecular Weight:	240.26
Beilstein/REAXYS Number:	3300829
MDL number:	MFCD00557128
PubChem Substance ID:	329751445

Copper speciation by kinetic photometry based on catalytic oxidn. of 3-hydroxybenzaldehyde azine with K2S2O8

Discover LiChropur reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
grade	for HPLC derivatization
assay	98.0% (NT), 98.0%
quality	LiChropur^™
application(s)	HPLC: suitable, UV/Vis spectroscopy: suitable
mp	208-212 °C
SMILES string	Oc1cccc(\C=N/N=C/c2cccc(O)c2)c1
InChI	1S/C14H12N2O2/c17-13-5-1-3-11(7-13)9-15-16-10-12-4-2-6-14(18)8-12/h1-10,17-18H/b15-9-,16-10+
InChI key	RNYGIOAXUUJHOC-CKOAPEAFSA-N

3-Hydroxypicolinic acid (3-HPA) is a matrix material used in matrix-assisted laser desorption/ionization (MALDI) based mass spectroscopy (MS) for the analysis of large biomolecules and quantification of oligonucleotides.

pictograms	GHS07
signalword	Warning
hcodes	H302 - H315 - H319 - H335
pcodes	P301 + P312 + P330 - P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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3-Hydroxypicolinic acid

Empirical Formula (Hill Notation):	C₆H₅NO₃
CAS Number:	874-24-8
Molecular Weight:	139.11
Beilstein/REAXYS Number:	118954
EC Number:	212-859-0
MDL number:	MFCD00006294
PubChem Substance ID:	329758183
NACRES:	NA.21

Bottomless glass bottle. Contents are inside inserted fused cone.

3-Hydroxypicolinic acid has been used in the study conducted to isolate and characterize bacteria degrading-quinoline in subsurface sediments.
Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. 56197.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.

Quality Level	100
grade	matrix substance for MALDI-MS
assay	≥99.0% (HPLC)
analyte chemical class(es)	oligonucleotides, oligosaccharides
application(s)	MALDI-MS: suitable
mp	213-218 °C (lit.)
cation traces	Ba: ≤5 mg/kg, Ca: ≤50 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤20 mg/kg, K: ≤20 mg/kg, Mg: ≤50 mg/kg, Mn: ≤5 mg/kg, Na: ≤100 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤50 mg/kg
SMILES string	OC(=O)c1ncccc1O
InChI	1S/C6H5NO3/c8-4-2-1-3-7-5(4)6(9)10/h1-3,8H,(H,9,10)
InChI key	BRARRAHGNDUELT-UHFFFAOYSA-N

Assay (argentometric): 99
Identity (IR-spectrum): passes test
pH-value (0.4%, water): 3 - 4
Melting point: about 270
Sulfated ash: 0.1 %
Loss on Drying (105°C): 1.0 %
Suitability for determination of aldehydes: passes test

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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3-Methyl-2-benzothiazolinone-hydrazonehydrochloride

Empirical Formula (Hill Notation):	C₈H₁₀ClN₃S
CAS Number:	4338-98-1
Molecular Weight:	215.70
EC Index Number:	224-393-5

3-Nitrobenzyl alcohol (3-NBA) is most commonly used matrix for spectrometry methods. It helps in the analysis of porphyrins, cyclic peptides, alkali metal cationized fatty acids for collisional activation and also certain organoruthenium compounds.

storage conditions	Store at +15°C to +25°C.
Agency/Method	reag. Ph. Eur.
Quality Level	100
potency	149 mg/kg LD₅₀, oral (Rat), 12300 mg/kg LD₅₀, skin (Rabbit)
pH	3-4 (20 °C, 4 g/L in H₂O)
bulk density	748 kg/m³
storage temp.	15-25°C
InChI	1S/C8H9N3S.Cl/c1-11-6-4-2-3-5-7(6)12-8(11)10-9;/h2-5H,9H2,1H3;/b10-8+;
InChI key	WAGARHVUZQWORV-VRTOBVRTSA-N

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3-Nitrobenzyl alcohol

Empirical Formula (Hill Notation):	C₇H₇NO₃
Linear Formula:	O₂NC₆H₄CH₂OH
CAS Number:	619-25-0
Molecular Weight:	153.14
Beilstein/REAXYS Number:	2044769
EC Number:	210-588-2
MDL number:	MFCD00007273
PubChem Substance ID:	329764660
NACRES:	NA.21

3-NBA has been used as liquid matrix in Ionization in liquid secondary ion mass spectrometry.

Matrix used in fast atom bombardment mass spectrometry

Quality Level	100
assay	≥99.5% (GC), ≥99.5%
application(s)	mass spectrometry (MS): suitable
bp	175-180 °C/3 mmHg (lit.)
mp	30-32 °C (lit.), 30-32 °C
density	1.29 g/mL at 20 °C (lit.)
SMILES string	OCc1cccc(c1)[N+]([O-])=O
InChI	1S/C7H7NO3/c9-5-6-2-1-3-7(4-6)8(10)11/h1-4,9H,5H2
InChI key	CWNPOQFCIIFQDM-UHFFFAOYSA-N

4,4′,4′′,4′′′-(Porphine-5,10,15,20-tetrayl)tetrakis(benzenesulfonic acid) [tetrasodium salt hydrate, TPPS] has been used in preparing Co–Al LDH/Fe(III)-TPPS film modified electrode; for demonstrating reversible redox peak attribution to Co(III)/Co(II), with iron(III) porphyrin; making it mediator for electron transfer.

Personal Protective Equipment	Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	233.6 °F - closed cup
Flash Point C	112 °C - closed cup

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4,4,4,4-(Porphine-5,10,15,20-tetrayl)tetrakis(benzenesulfonic acid)

Empirical Formula (Hill Notation):	C₄₄H₃₀N₄O₁₂S₄
CAS Number:	35218-75-8
Molecular Weight:	934.99
Beilstein/REAXYS Number:	4227566
MDL number:	MFCD00070632
PubChem Substance ID:	329769738
NACRES:	NA.21

Bottomless glass bottle. Contents are inside inserted fused cone.

Analysis Note

max. Absorption (in Methanol): 412-416 nm

Reagent for the spectrophotometric determination of ultra trace amounts of transition metals; determination by capillary zone electrophoresis

Quality Level	100
assay	≥95.0% (HPLC), ≥95.0%
quality	for spectrophotometric det. of transition metals
application(s)	UV/Vis spectroscopy: suitable
impurities	~9% water
SMILES string	OS(=O)(=O)c1ccc(cc1)-c2c3ccc(n3)c(-c4ccc(cc4)S(O)(=O)=O)c5ccc([nH]5)c(-c6ccc(cc6)S(O)(=O)=O)c7ccc(n7)c(-c8ccc(cc8)S(O)(=O)=O)c9ccc2[nH]9
InChI	1S/C44H30N4O12S4/c49-61(50,51)29-9-1-25(2-10-29)41-33-17-19-35(45-33)42(26-3-11-30(12-4-26)62(52,53)54)37-21-23-39(47-37)44(28-7-15-32(16-8-28)64(58,59)60)40-24-22-38(48-40)43(36-20-18-34(41)46-36)27-5-13-31(14-6-27)63(55,56)57/h1-24,45,48H,(H,49,50,51)(H,52,53,54)(H,55,56,57)(H,58,59,60)/b41-33-,41-34-,42-35-,42-37-,43-36-,43-38-,44-39-,44-40-
InChI key	PBHVCRIXMXQXPD-LWQDQPMZSA-N

4,4-Dimethyl-2,2-dipyridyl is a monondentate ligand.

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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4,4-Dimethyl-2,2-dipyridyl

Empirical Formula (Hill Notation):	C₁₂H₁₂N₂
CAS Number:	1134-35-6
Molecular Weight:	184.24
Beilstein/REAXYS Number:	128995
EC Number:	214-483-2
MDL number:	MFCD00006441
PubChem Substance ID:	329755955
NACRES:	NA.21

It was used as a ligand in a study done to understand the photosubstitution in Tris chelate complexes of Ruthenium (II).

Quality Level	100
grade	for spectrophotometric det.
assay	≥99.0% (NT), ≥99.0%
application(s)	UV/Vis spectroscopy: suitable
mp	169-174 °C (lit.), 171-173 °C
SMILES string	Cc1ccnc(c1)-c2cc(C)ccn2
InChI	1S/C12H12N2/c1-9-3-5-13-11(7-9)12-8-10(2)4-6-14-12/h3-8H,1-2H3
InChI key	NBPGPQJFYXNFKN-UHFFFAOYSA-N

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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4,5-Dimethoxy-1,2-phenylenediamine hydrochloride

Empirical Formula (Hill Notation):	C₈H₁₂N₂O₂ · 2HCl
CAS Number:	131076-14-7
Molecular Weight:	241.11
Beilstein/REAXYS Number:	14573971
MDL number:	MFCD00462577
PubChem Substance ID:	329754998
NACRES:	NA.22

Discover LiChropur reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
grade	for HPLC derivatization
assay	98.0% (GC)
quality	LiChropur^™
application(s)	HPLC: suitable
storage temp.	20°C
InChI	1S/C8H12N2O2/c1-11-7-3-5(9)6(10)4-8(7)12-2/h3-4H,9-10H2,1-2H3
InChI key	SKIUVOVOIJBJPN-UHFFFAOYSA-N

Superior reagent for monitoring aldehydes and ketones in air; Fluorogenic peroxidase substrate

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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4-(1-Methylhydrazino)-7-nitrobenzofurazan

Empirical Formula (Hill Notation):	C₇H₇N₅O₃
CAS Number:	214147-22-5
Molecular Weight:	209.16
Beilstein/REAXYS Number:	8316412
MDL number:	MFCD03453275
PubChem Substance ID:	329770247
NACRES:	NA.22

Discover LiChropur reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
grade	for HPLC derivatization
assay	97.0% (HPLC), 97.0%
quality	LiChropur^™
application(s)	HPLC: suitable, UV/Vis spectroscopy: suitable
mp	~160 °C
storage temp.	2-8°C
SMILES string	CN(N)c1ccc([N+]([O-])=O)c2nonc12
InChI	1S/C7H7N5O3/c1-11(8)4-2-3-5(12(13)14)7-6(4)9-15-10-7/h2-3H,8H2,1H3
InChI key	GVUXVETWVIWDEV-UHFFFAOYSA-N

Assay (Perchloric acid titration, calc. on anhydrous substance): 99
Appearance of solution: passes test
Water (according to Karl Fischer): 7 - 8
Suitability as indicator (for metal titration): passes test

pictograms	GHS07
signalword	Warning
hcodes	H315 - H319 - H335
pcodes	P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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4-(2-Pyridylazo)resorcinol monosodium salt monohydrate

Empirical Formula (Hill Notation):	C₁₁H₈N₃NaO₂ · xH₂O
CAS Number:	16593-81-0
Molecular Weight:	237.19 (anhydrous basis)
EC Index Number:	236-339-8

for the detection of epoxides and methylating reagents; for spectrophotometric determination of phosphorus-containing pesticides

storage conditions	Store at +5°C to +30°C.
Agency/Method	reag. Ph. Eur.
Quality Level	100
pH	9.8 (20 °C, 10 g/L in H₂O)
solubility	38 g/L
bulk density	630 kg/m³
storage temp.	2-30°C
InChI	1S/C11H9N3O2/c15-8-4-5-9(10(16)7-8)13-14-11-3-1-2-6-12-11/h1-7,16H,(H,12,14)/b13-9+
InChI key	VLCAILLZPUINNF-UKTHLTGXSA-N

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4-(4-Nitrobenzyl)pyridine

Empirical Formula (Hill Notation):	C₁₂H₁₀N₂O₂
CAS Number:	1083-48-3
Molecular Weight:	214.22
Beilstein/REAXYS Number:	170877
EC Number:	214-108-2
MDL number:	MFCD00006445
PubChem Substance ID:	329764703
NACRES:	NA.22

Reagent for the determination of alkylating agents

Quality Level	100
grade	for TLC derivatization
assay	≥98.0% (NT)
quality	for spectrophotometric det. of phosphorus-containing pesticides
application(s)	UV/Vis spectroscopy: suitable, thin layer chromatography (TLC): suitable
ign. residue	≤0.1%
mp	69-71 °C (lit.)
SMILES string	[O-][N+](=O)c1ccc(Cc2ccncc2)cc1
InChI	1S/C12H10N2O2/c15-14(16)12-3-1-10(2-4-12)9-11-5-7-13-8-6-11/h1-8H,9H2
InChI key	MNHKUCBXXMFQDM-UHFFFAOYSA-N

Amino groups are common to many biological compounds and many amines used in pharmaceuticals. Most of these compounds show weak absorption in direct HPLC analysis with UV-VIS detection. However, strongly absorbing derivatives of amines can be easily detected by HPLC with high sensitivity even when present at low concentrations. Primary and secondary amino groups are usually derivatized as aromatic derivatives by nucleophilic substitution reactions using reagents such as arylsulfonyl chlorides.
4-(Dimethylamino)azobenzene-4-sulfonyl chloride, a well-known UV-labeling agent, is generally used for the derivatization of N-terminal amino acids, imidazole derivatives, polyamines, etc. prior to their chromatographic determination due to the formers capacity to covalently bind to the substrates. Its derivatives typically absorb UV radiation between the range of 436-460 nm. This method of derivatization is regarded as superior compared to other methods owing to the simplicity of the procedure, high stability and reproducibility, best resolution of the analytes, etc.

Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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4-(Dimethylamino)azobenzene-4-sulfonyl chloride

Empirical Formula (Hill Notation):	C₁₄H₁₄ClN₃O₂S
Linear Formula:	(CH₃)₂NC₆H₄N=NC₆H₄SO₂Cl
CAS Number:	56512-49-3
Molecular Weight:	323.80
Beilstein/REAXYS Number:	3064095
EC Number:	260-235-1
MDL number:	MFCD00007444

4-(Dimethylamino)azobenzene-4′-sulfonyl chloride may be used to derivatize biogenic amines, primary amino acids, melamine, and hydroxyproline and proline extracted from various biological samples prior to their determination using high performance liquid chromatography (HPLC) technique to increase their detection sensitivity.

Discover LiChropur™ reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
grade	for HPLC derivatization
assay	98.0-102.0% (AT)
quality	LiChropur^™
application(s)	HPLC: suitable
mp	185 °C (dec.) (lit.)
SMILES string	CN(C)c1ccc(cc1)\N=N\c2ccc(cc2)S(Cl)(=O)=O
InChI	1S/C14H14ClN3O2S/c1-18(2)13-7-3-11(4-8-13)16-17-12-5-9-14(10-6-12)21(15,19)20/h3-10H,1-2H3/b17-16+
InChI key	VTVWTPGLLAELLI-WUKNDPDISA-N

Replaces: DX1590-3; DX1590

pictograms	GHS05
signalword	Danger
hcodes	H314
pcodes	P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
RIDADR	UN 3261 8 / PGII
WGK Germany	WGK 3
Flash Point F	Not applicable
Flash Point C	Not applicable

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4-(Dimethylamino)benzaldehyde

Empirical Formula (Hill Notation):	C₉H₁₁NO
Linear Formula:	4-[(CH₃)₂N]C₆H₄CHO
CAS Number:	100-10-7
Molecular Weight:	149.19
MDL number:	MFCD00003381
EC Index Number:	202-819-0

Кат. номер
1030581000
1030580100
1030580025
1.03058.0025
1.03058.1000
IN21030580100
US11.03058/1000
US11.03058/0100
1.03058.0100

Linkage

Analysis Note

Assay (perchloric acid titration): 99 %
Identity (IR-spectrum): passes test
Melting point: 73 - 75 °C
Heavy metals (as Pb): 0.001 %
Fe (Iron): 0.001 %
Readily carbonisable substance: passes test
Sulfated ash: 0.1 %
Loss on drying: 0.5 %

4-(Dimethylamino)benzoyl chloride is an organic chemical, basically used as HPLC derivatization reagent.
Material is reported to be very moisture sensitive. Handle under an inert atmosphere

storage conditions	Store at +15°C to +25°C.
Agency/Method	reag. Ph. Eur.
Quality Level	100
vapor pressure	<0.1 hPa ( 20 °C)
autoignition temp.	445 °C
potency	>6400 mg/kg LD₅₀, oral (Rat)
mp	75 °C
transition temp	flash point >100 °C
density	1.22 g/cm³ at 20.1 °C
bulk density	350 kg/m³
storage temp.	15-25°C
InChI	1S/C9H11NO/c1-10(2)9-5-3-8(7-11)4-6-9/h3-7H,1-2H3
InChI key	BGNGWHSBYQYVRX-UHFFFAOYSA-N

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4-(Dimethylamino)benzoyl chloride

Empirical Formula (Hill Notation):	C₉H₁₀ClNO
Linear Formula:	(CH₃)₂NC₆H₄COCl
CAS Number:	4755-50-4
Molecular Weight:	183.63
MDL number:	MFCD00236039
PubChem Substance ID:	329760712
NACRES:	NB.21

4-(Dimethylamino)benzoyl chloride dissovled in N-methyl-2-pyrrolidinone (NMP) and pyridine may be used in the synthesis of 6-O-(4-(Dimethylamino)benzoyl)curdlan (DABz-Cur) by adding curdlan to dry NMP.

Discover LiChropur reagents ideal for HPLC or LC-MS analysis

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Quality Level	100
grade	for HPLC derivatization
assay	99.0% (HPLC), 99.0-101.0% (AT)
quality	LiChropur^™
application(s)	HPLC: suitable
mp	145-149 °C (lit.), 146-150 °C
suitability	complies for LC-MS
SMILES string	CN(C)c1ccc(cc1)C(Cl)=O
InChI	1S/C9H10ClNO/c1-11(2)8-5-3-7(4-6-8)9(10)12/h3-6H,1-2H3
InChI key	UGJDXRVQCYBXAJ-UHFFFAOYSA-N