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Impurities & Reference Standards

Pharmacopoeial and non-pharmacopoeial impurities, metabolites, nitrosamines and working standards with characterisation data for QC and regulatory work.

28,554products

6sub-categories

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COA + SDSwith every lot

API Impurities 14,252 Pharmacopeial Impurities (EP / USP / BP) 4,401 Nitrosamine Impurities 650 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,612 Metabolites & Degradation Products 4,146 API Reference Standards 3,493

Reference Standard

5-Chloro-2-methylthieno[2,3-d]isothiazol-3(2H)-one 1,1-dioxide chemical structure

5-Chloro-2-methylthieno[2,3-d]isothiazol-3(2H)-one 1,1-dioxide

CAS: 1333316-61-2
Formula: C₆H₄ClNO₃S₂
MW: 237.7 g/mol

VQ-034123

Reference Standard

5-Chloro-2-nitrodiphenylamine chemical structure

5-Chloro-2-nitrodiphenylamine

CAS: 25781-92-4
Formula: C₁₂H₉ClN₂O₂
MW: 248.66 g/mol

VQ-027123

Reference Standard

5-Chloro-2,4,6-pyrimidinetriamine chemical structure

5-Chloro-2,4,6-pyrimidinetriamine

CAS: 24867-23-0
Formula: C₄H₆ClN₅
MW: 159.58 g/mol

VQ-032890

Reference Standard

5-Chloro-3-(N-methylsulfamoyl)thiophene-2-carboxylic Acid chemical structure

5-Chloro-3-(N-methylsulfamoyl)thiophene-2-carboxylic Acid

CAS: 70374-36-6
Formula: C₆H₆ClNO₄S₂
MW: 255.7 g/mol

VQ-026512

Reference Standard

5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde chemical structure

5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde

CAS: 947-95-5
Formula: C₁₁H₉ClN₂O
MW: 220.65 g/mol

VQ-040027

Reference Standard

5-Chloro-3-methylbenzo[d]oxazol-2(3H)-one chemical structure

5-Chloro-3-methylbenzo[d]oxazol-2(3H)-one

CAS: 5790-90-9
Formula: C₈H₆ClNO₂
MW: 183.59 g/mol

VQ-047612

Reference Standard

5-Chloro-3-sulfamoylthiophene-2-carboxylic Acid chemical structure

5-Chloro-3-sulfamoylthiophene-2-carboxylic Acid

CAS: 1017791-22-8
Formula: C₅H₄ClNO₄S₂
MW: 241.7 g/mol

VQ-031640

Reference Standard

5-Chloro-3-sulfinothiophene-2-carboxylic Acid chemical structure

5-Chloro-3-sulfinothiophene-2-carboxylic Acid

CAS: 187746-97-0
Formula: C₅H₃ClO₄S₂
MW: 226.7 g/mol

VQ-026510

Reference Standard

5-Chloro-3-sulfothiophene-2-carboxylic Acid chemical structure

5-Chloro-3-sulfothiophene-2-carboxylic Acid

CAS: 187746-94-7
Formula: C₅H₃ClO₅S₂
MW: 242.7 g/mol

VQ-026511

Reference Standard

5-Chloro-3,4-dihydro-2H-benzo[e][1,2,4]thiadiazine-7-sulfonamide 1,1-dioxide chemical structure

5-Chloro-3,4-dihydro-2H-benzo[e][1,2,4]thiadiazine-7-sulfonamide 1,1-dioxide

CAS: 856302-12-0
Formula: C₇H₈ClN₃O₄S₂
MW: 297.7 g/mol

VQ-026062

Reference Standard

5-Chloro-3,4-dihydroquinolin-2(1H)-one chemical structure

5-Chloro-3,4-dihydroquinolin-2(1H)-one

CAS: 72995-15-4
Formula: C₉H₈ClNO
MW: 181.62 g/mol

VQ-032806

Reference Standard

5-Chloro-3H-2-benzofuran-1-one chemical structure

5-Chloro-3H-2-benzofuran-1-one

CAS: 54109-03-4
Formula: C₈H₅ClO₂
MW: 168.57 g/mol

VQ-039785

Reference Standard

5-Chloro-4-(((3S,4S,5R)-3-hydroxy-2,5-bis(hydroxymethyl)-4-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydrofuran-2-yl)amino)-N-(1-(3-methoxypropyl)piperidin-4-yl)-2,3-dihydrobenzofuran-7-carboxamide chemical structure

5-Chloro-4-(((3S,4S,5R)-3-hydroxy-2,5-bis(hydroxymethyl)-4-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydrofuran-2-yl)amino)-N-(1-(3-methoxypropyl)piperidin-4-yl)-2,3-dihydrobenzofuran-7-carboxamide

CAS: 2245785-75-3
Formula: C₃₀H₄₆ClN₃O₁₃
MW: 692.1 g/mol

VQ-041755

Reference Standard

5-Chloro-4-isothiocyanatobenzo[c][1,2,5]thiadiazole chemical structure

5-Chloro-4-isothiocyanatobenzo[c][1,2,5]thiadiazole

CAS: 1467836-46-9
Formula: C₇H₂ClN₃S₂
MW: 227.7 g/mol

VQ-044091

Reference Standard

5-Chloro-5`-Deoxycytidine chemical structure

5-Chloro-5`-Deoxycytidine

CAS: 31652-78-5
Formula: C₉H₁₂ClN₃O₄
MW: 261.66 g/mol

VQ-036492

Reference Standard

5-Chloro-6-(methoxymethyl)pyrimidine-2,4(1H,3H)-dione chemical structure

5-Chloro-6-(methoxymethyl)pyrimidine-2,4(1H,3H)-dione

CAS: 733037-98-4
Formula: C₆H₇ClN₂O₃
MW: 190.58 g/mol

VQ-034291

Reference Standard

5-Chloro-6-(piperidin-1-yl)pyrimidine-2,4-diamine chemical structure

5-Chloro-6-(piperidin-1-yl)pyrimidine-2,4-diamine

CAS: 1784008-01-0
Formula: C₉H₁₄ClN₅
MW: 227.69 g/mol

VQ-026716

Reference Standard

5-Chloro-6-[4-(ethoxycarbonyl)piperidino]-nicotinicacid chemical structure

5-Chloro-6-[4-(ethoxycarbonyl)piperidino]-nicotinicacid

CAS: 931395-73-2
Formula: C₁₄H₁₇ClN₂O₄
MW: 312.75 g/mol

VQ-038627

Reference Standard

5-Chloro-6-nitrobenzo[c][1,2,5]thiadiazole chemical structure

5-Chloro-6-nitrobenzo[c][1,2,5]thiadiazole

CAS: 2207-33-2
Formula: C₆H₂ClN₃O₂S
MW: 215.62 g/mol

VQ-034298

Reference Standard

5-Chloro-6'-methyl-3-(4-(methylthio)phenyl)-2,3'-bipyridine chemical structure

5-Chloro-6'-methyl-3-(4-(methylthio)phenyl)-2,3'-bipyridine

CAS: 292067-97-1
Formula: C₁₈H₁₅ClN₂S
MW: 326.8 g/mol

VQ-025681

Reference Standard

5-Chloro-6′-(methylsulfonyl)-3-[4-(methylsulfonyl)phenyl]-2,3′-bipyridine chemical structure

5-Chloro-6′-(methylsulfonyl)-3-[4-(methylsulfonyl)phenyl]-2,3′-bipyridine

CAS: 646459-49-6
Formula: C₁₈H₁₅ClN₂O₄S₂
MW: 422.9 g/mol

VQ-035362

Reference Standard

5-Chloro-8-hydroxyquinoline Glucuronide chemical structure

5-Chloro-8-hydroxyquinoline Glucuronide

CAS: 65851-39-0
Formula: C₁₅H₁₄ClNO₇
MW: 355.72 g/mol

VQ-044320

Reference Standard

5-Chloro-N-(4-(4-chlorothiophen-2-yl)-5-(4-cyclohexylpiperazin-1-yl)thiazol-2-yl)-6-(dimethylamino)nicotinamide chemical structure

5-Chloro-N-(4-(4-chlorothiophen-2-yl)-5-(4-cyclohexylpiperazin-1-yl)thiazol-2-yl)-6-(dimethylamino)nicotinamide

CAS: 2626934-45-8
Formula: C₂₅H₃₀Cl₂N₆OS₂
MW: 565.6 g/mol

VQ-028955

Reference Standard

5-Chloro-N-(4-nitrophenyl)pentanamide chemical structure

5-Chloro-N-(4-nitrophenyl)pentanamide

CAS: 1039914-85-6
Formula: C₁₁H₁₃ClN₂O₃
MW: 256.68 g/mol

VQ-035763

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