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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.

27,990products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,098 Pharmacopeial Impurities (EP / USP / BP) 4,399 Nitrosamine Impurities 631 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,504 Metabolites & Degradation Products 3,922 API Reference Standards 3,436

Reference Standard

(Z)-2-(1-(2-Cyclopropyl-1-(2-fluorophenyl)-2-oxoethyl)-4-mercaptopiperidin-3-ylidene)acetic acid Hydrochloride chemical structure

(Z)-2-(1-(2-Cyclopropyl-1-(2-fluorophenyl)-2-oxoethyl)-4-mercaptopiperidin-3-ylidene)acetic acid Hydrochloride

CAS: 239466-73-0
Formula: C₁₈H₂₁ClFNO₃S
MW: 385.9 g/mol

VQ-027577

Reference Standard

(Z)-2-(2-Aminothiazol-4-yl)-2-(((1-(tert-butoxy)-2-methyl-1-oxopropan-2-yl)oxy)imino)acetic Acid chemical structure

(Z)-2-(2-Aminothiazol-4-yl)-2-(((1-(tert-butoxy)-2-methyl-1-oxopropan-2-yl)oxy)imino)acetic Acid

CAS: 86299-47-0
Formula: C₁₃H₁₉N₃O₅S
MW: 329.37 g/mol

VQ-022110

Reference Standard

(Z)-2-(2-Aminothiazol-4-yl)-2-((2-methoxy-2-oxoethoxy)imino)acetic Acid chemical structure

(Z)-2-(2-Aminothiazol-4-yl)-2-((2-methoxy-2-oxoethoxy)imino)acetic Acid

CAS: 80544-17-8
Formula: C₈H₉N₃O₅S
MW: 259.24 g/mol

VQ-024852

Reference Standard

(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamide chemical structure

(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamide

CAS: 1450758-21-0
Formula: C₅H₆N₄O₂S
MW: 186.19 g/mol

VQ-043101

Reference Standard

(Z)-2-(2-Aminothiazol-4-yl)-N-((5aR,6R)-1,7-dioxo-1,4,5a,6-tetrahydro-3H,7H-azeto[2,1-b]thieno[3,4-d][1,3]thiazin-6-yl)-2-(methoxyimino)acetamide chemical structure

(Z)-2-(2-Aminothiazol-4-yl)-N-((5aR,6R)-1,7-dioxo-1,4,5a,6-tetrahydro-3H,7H-azeto[2,1-b]thieno[3,4-d][1,3]thiazin-6-yl)-2-(methoxyimino)acetamide

CAS: 120882-23-7
Formula: C₁₄H₁₃N₅O₄S₃
MW: 411.5 g/mol

VQ-022114

Reference Standard

(Z)-2-(2-Tritylaminothiazol-4-yl)-2-methoxyiminoacetic Acid chemical structure

(Z)-2-(2-Tritylaminothiazol-4-yl)-2-methoxyiminoacetic Acid

CAS: 64485-90-1
Formula: C₂₅H₂₁N₃O₃S
MW: 443.5 g/mol

VQ-024877

Reference Standard

(Z)-2-(2,6-Dimethyl-4-(3-(4-(methylthio)phenyl)-3-oxoprop-1-en-1-yl)phenoxy)-2-methylpropanoic Acid

(Z)-2-(2,6-Dimethyl-4-(3-(4-(methylthio)phenyl)-3-oxoprop-1-en-1-yl)phenoxy)-2-methylpropanoic Acid

CAS: 3046217-14-2
Formula: C₂₂H₂₄O₄S
MW: 384.49 g/mol

VQ-036927

Reference Standard

(Z)-2-(4-((4-(Piperidin-1-ylmethyl)pyridin-2-yl)oxy)but-2-en-1-yl)isoindoline-1,3-dione chemical structure

(Z)-2-(4-((4-(Piperidin-1-ylmethyl)pyridin-2-yl)oxy)but-2-en-1-yl)isoindoline-1,3-dione

CAS: 146269-98-9
Formula: C₂₃H₂₅N₃O₃
MW: 391.5 g/mol

VQ-037858

Reference Standard

(Z)-2-(Dibenzo[b,e]oxepin-11(6H)-ylidene)acetaldehyde chemical structure

(Z)-2-(Dibenzo[b,e]oxepin-11(6H)-ylidene)acetaldehyde

CAS: 83473-98-7
Formula: C₁₆H₁₂O₂
MW: 236.26 g/mol

VQ-036814

Reference Standard

(Z)-2-(Furan-2-yl)-2-(methoxyimino)acetyl chloride chemical structure

(Z)-2-(Furan-2-yl)-2-(methoxyimino)acetyl chloride

CAS: 59176-08-8
Formula: C₇H₆ClNO₃
MW: 187.58 g/mol

VQ-024891

Reference Standard

(Z)-2-Chloro-2-(2-(4-methoxyphenyl)hydrazineylidene) acetic acid chemical structure

(Z)-2-Chloro-2-(2-(4-methoxyphenyl)hydrazineylidene) acetic acid

CAS: 40345-06-0
Formula: C₉H₉ClN₂O₃
MW: 228.63 g/mol

VQ-029182

Reference Standard

(Z)-2-Cyano-3-hydroxy-N-(3-(trifluoromethyl)phenyl)but-2-enamide chemical structure

(Z)-2-Cyano-3-hydroxy-N-(3-(trifluoromethyl)phenyl)but-2-enamide

CAS: 63927-52-6
Formula: C₁₂H₉F₃N₂O₂
MW: 270.21 g/mol

VQ-031466

Reference Standard

(Z)-2-Cyano-N-(4-ethoxy-3-(pyridin-4-yl)but-3-en-2-yl)acetamide chemical structure

(Z)-2-Cyano-N-(4-ethoxy-3-(pyridin-4-yl)but-3-en-2-yl)acetamide

CAS: 2244529-59-5
Formula: C₁₄H₁₇N₃O₂
MW: 259.3 g/mol

VQ-043600

Reference Standard

(Z)-2-Methoxyimino-2-furanacetic Acid Ammonium Salt chemical structure

(Z)-2-Methoxyimino-2-furanacetic Acid Ammonium Salt

CAS: 97148-39-5
Formula: C₇H₁₀N₂O₄
MW: 186.17 g/mol

VQ-024887

Reference Standard

(Z)-2,2,2-Trifluoro-N'-(piperazin-2-ylidene)acetohydrazide chemical structure

(Z)-2,2,2-Trifluoro-N'-(piperazin-2-ylidene)acetohydrazide

CAS: 763105-70-0
Formula: C₆H₉F₃N₄O
MW: 210.16 g/mol

VQ-044749

Reference Standard

(Z)-2,5-Dichloro-N`-hydroxy-4,6-dimethylnicotinimidamide chemical structure

(Z)-2,5-Dichloro-N`-hydroxy-4,6-dimethylnicotinimidamide

CAS: 923288-59-9
Formula: C₈H₉Cl₂N₃O
MW: 234.08 g/mol

VQ-027024

Reference Standard

(Z)-3-((2'-(N'-Hydroxycarbamimidoyl)-[1,1'-biphenyl]-4-yl)methyl)-2-oxo-2,3-dihydro-1H-benzo[d]imidazole-4-carboxylic Acid chemical structure

(Z)-3-((2'-(N'-Hydroxycarbamimidoyl)-[1,1'-biphenyl]-4-yl)methyl)-2-oxo-2,3-dihydro-1H-benzo[d]imidazole-4-carboxylic Acid

CAS: 1821386-21-3
Formula: C₂₂H₁₈N₄O₄
MW: 402.4 g/mol

VQ-021711

Reference Standard

(Z)-3-(2-Bromo-4,5-dimethoxyphenyl)-2-cyanoacrylic Acid

(Z)-3-(2-Bromo-4,5-dimethoxyphenyl)-2-cyanoacrylic Acid

CAS: 1208977-76-7
Formula: C₁₂H₁₀BrNO₄
MW: 312.12 g/mol

VQ-037787

Reference Standard

(Z)-3-(4-Amino-3,5-dimethylphenyl)acrylonitrile chemical structure

(Z)-3-(4-Amino-3,5-dimethylphenyl)acrylonitrile

CAS: 661489-22-1
Formula: C₁₁H₁₂N₂
MW: 172.23 g/mol

VQ-033542

Reference Standard

(Z)-3-(6-((E)-3-(Pyrrolidin-1-yl)-1-(p-tolyl)prop-1-en-1-yl)pyridin-2-yl)acrylic Acid

(Z)-3-(6-((E)-3-(Pyrrolidin-1-yl)-1-(p-tolyl)prop-1-en-1-yl)pyridin-2-yl)acrylic Acid

CAS: 2375728-22-4
Formula: C₂₂H₂₄N₂O₂
MW: 348.44 g/mol

VQ-047328

Reference Standard

(Z)-3-(Cyclohexylmethylene)isobenzofuran-1(3H)-one

(Z)-3-(Cyclohexylmethylene)isobenzofuran-1(3H)-one

CAS: 181372-38-3
Formula: C₁₅H₁₆O₂
MW: 228.3 g/mol

VQ-049183

Reference Standard

(Z)-3-(Dimethylamino)-1-(pyridin-3-yl)prop-2-en-1-one chemical structure

(Z)-3-(Dimethylamino)-1-(pyridin-3-yl)prop-2-en-1-one

CAS: 75415-01-9
Formula: C₁₀H₁₂N₂O
MW: 176.21 g/mol

VQ-038645

Reference Standard

(Z)-3-Carboxy-N,N,N-trimethylprop-2-en-1-aminium chloride chemical structure

(Z)-3-Carboxy-N,N,N-trimethylprop-2-en-1-aminium chloride

CAS: 835638-57-8
Formula: C₇H₁₄ClNO₂
MW: 179.64 g/mol

VQ-037987

Reference Standard

(Z)-3-Chloro-N-methyl-N-(naphthalen-1-ylmethyl)prop-2-en-1-amine chemical structure

(Z)-3-Chloro-N-methyl-N-(naphthalen-1-ylmethyl)prop-2-en-1-amine

CAS: 704909-67-1
Formula: C₁₅H₁₆ClN
MW: 245.74 g/mol

VQ-034131

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