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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

3-Hydroxyhippuric acid chemical structure

3-Hydroxyhippuric acid

CAS: 1637-75-8
Formula: C₉H₉NO₄
MW: 195.17 g/mol

VQ-037579

Reference Standard

3-Hydroxymethyl Meclofenamic Acid-d4 chemical structure

3-Hydroxymethyl Meclofenamic Acid-d4

CAS: 1189663-45-3
Formula: C₁₄H₁₁Cl₂NO₃
MW: 316.2 g/mol

VQ-043413

Reference Standard

3-Hydroxymethyl Mefenamic Acid chemical structure

3-Hydroxymethyl Mefenamic Acid

CAS: 5129-20-4
Formula: C₁₅H₁₅NO₃
MW: 257.28 g/mol

VQ-043220

Reference Standard

3-Hydroxymethyl-s-triazolo[3,4-a]phthalazine chemical structure

3-Hydroxymethyl-s-triazolo[3,4-a]phthalazine

CAS: 54687-66-0
Formula: C₁₀H₈N₄O
MW: 200.2 g/mol

VQ-031076

Reference Standard

3-Hydroxyomeprazole chemical structure

3-Hydroxyomeprazole

CAS: 176219-02-6
Formula: C₁₇H₁₉N₃O₄S
MW: 361.4 g/mol

VQ-049323

Reference Standard

3-Hydroxyphenyltrimethylammonium Methylsulfate chemical structure

3-Hydroxyphenyltrimethylammonium Methylsulfate

CAS: 4312-54-3
Formula: C₁₀H₁₇NO₅S
MW: 263.31 g/mol

VQ-032100

Reference Standard

3-Hydroxypromazine chemical structure

3-Hydroxypromazine

CAS: 316-85-8
Formula: C₁₇H₂₀N₂OS
MW: 300.4 g/mol

VQ-047761

Reference Standard

3-Hydroxypropane-1,2-diyl bis(4-phenylbutanoate) chemical structure

3-Hydroxypropane-1,2-diyl bis(4-phenylbutanoate)

CAS: 1443417-10-4
Formula: C₂₃H₂₈O₅
MW: 384.5 g/mol

VQ-033157

Reference Standard

3-Hydroxypropanoyl Chloride chemical structure

3-Hydroxypropanoyl Chloride

CAS: 109608-73-3
Formula: C₃H₅ClO₂
MW: 108.52 g/mol

VQ-047461

Reference Standard

3-Imino-5-((3R,4R)-4-methyl-3-(methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)piperidin-1-yl)-2-((3R,4R)-4-methyl-3-(methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)piperidine-1-carbonyl)-5-oxopentanenitrile chemical structure

3-Imino-5-((3R,4R)-4-methyl-3-(methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)piperidin-1-yl)-2-((3R,4R)-4-methyl-3-(methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)piperidine-1-carbonyl)-5-oxopentanenitrile

CAS: 2102040-00-4
Formula: C₃₂H₄₀N₁₂O₂
MW: 624.7 g/mol

VQ-042584

Reference Standard

3-Iodo-6-nitro-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole chemical structure

3-Iodo-6-nitro-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole

CAS: 886230-74-6
Formula: C₁₂H₁₂IN₃O₃
MW: 373.15 g/mol

VQ-043873

Reference Standard

3-Isobutyl-1-methyl-4-nitro-1H-pyrazole-5-carboxylic acid chemical structure

3-Isobutyl-1-methyl-4-nitro-1H-pyrazole-5-carboxylic acid

CAS: 1004455-71-3
Formula: C₉H₁₃N₃O₄
MW: 227.22 g/mol

VQ-044017

Reference Standard

3-Isobutyl-9,10-bis(methoxy-d3)-3,4,6,7-tetrahydro-2H-pyrido[2,1-a]isoquinolin-2-one chemical structure

3-Isobutyl-9,10-bis(methoxy-d3)-3,4,6,7-tetrahydro-2H-pyrido[2,1-a]isoquinolin-2-one

CAS: 2244238-17-1
Formula: C₁₉H₂₅NO₃
MW: 321.4 g/mol

VQ-028958

Reference Standard

3-Isobutylglutaric Anhydride chemical structure

3-Isobutylglutaric Anhydride

CAS: 185815-59-2
Formula: C₉H₁₄O₃
MW: 170.21 g/mol

VQ-033314

Reference Standard

3-Isobutylpentanediamide chemical structure

3-Isobutylpentanediamide

CAS: 1262340-21-5
Formula: C₉H₁₈N₂O₂
MW: 186.25 g/mol

VQ-041647

Reference Standard

3-Isobutylpentanedioic Acid Impurity chemical structure

3-Isobutylpentanedioic Acid Impurity

CAS: 75143-89-4
Formula: C₉H₁₆O₄
MW: 188.22 g/mol

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Reference Standard

3-Isopropyl 5-methyl 2,6-dimethyl-4-(2-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate chemical structure

3-Isopropyl 5-methyl 2,6-dimethyl-4-(2-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate

CAS: 39562-82-8
Formula: C₁₉H₂₂N₂O₆
MW: 374.4 g/mol

VQ-037955

Reference Standard

3-Isopropyl 5-methyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate chemical structure

3-Isopropyl 5-methyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate

CAS: 39562-18-0
Formula: C₁₉H₂₂N₂O₆
MW: 374.4 g/mol

VQ-044370

Reference Standard

3-Isopropylfuran-2,5-dione chemical structure

3-Isopropylfuran-2,5-dione

CAS: 64198-15-8
Formula: C₇H₈O₃
MW: 140.14 g/mol

VQ-041879

Reference Standard

3-Keto cyclopentyl Ruxolitinib chemical structure

3-Keto cyclopentyl Ruxolitinib

CAS: 1809535-64-5
Formula: C₁₇H₁₆N₆O
MW: 320.3 g/mol

VQ-045141

Reference Standard

3-Keto Fluvastatin Sodium chemical structure

3-Keto Fluvastatin Sodium

CAS: 1331643-17-4
Formula: C₂₄H₂₃FNNaO₄
MW: 431.4 g/mol

VQ-030849

Reference Standard

3-Keto-5 Alpha-Abiraterone chemical structure

3-Keto-5 Alpha-Abiraterone

CAS: 154229-26-2
Formula: C₂₄H₃₁NO
MW: 349.5 g/mol

VQ-020708

Reference Standard

3-Keto-5-Beta-Abiraterone chemical structure

3-Keto-5-Beta-Abiraterone

CAS: 1940175-99-4
Formula: C₂₄H₃₁NO
MW: 349.5 g/mol

VQ-028986

Reference Standard

3-Keto-N-Propargyl-1-Aminoindan chemical structure

3-Keto-N-Propargyl-1-Aminoindan

CAS: 1312077-05-6
Formula: C₁₂H₁₁NO
MW: 185.22 g/mol

VQ-041841

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