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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

2,746in stock

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

Avanafil N-ethyl Analog chemical structure

Avanafil N-ethyl Analog

CAS: 2520114-39-8
Formula: C₂₀H₂₆ClN₅O₃
MW: 419.9 g/mol

VQ-043056

Reference Standard

Avanafil N-Methyl Analog chemical structure

Avanafil N-Methyl Analog

CAS: 372117-53-8
Formula: C₁₉H₂₄ClN₅O₃
MW: 405.9 g/mol

VQ-043055

Reference Standard

Avanafil O-Desmethyl Analog chemical structure

Avanafil O-Desmethyl Analog

CAS: 330785-05-2
Formula: C₂₂H₂₄ClN₇O₃
MW: 469.9 g/mol

VQ-043057

Reference Standard

Avapritinib chemical structure

CAS: 1703793-34-3
Formula: C₂₆H₂₇FN₁₀
MW: 498.6 g/mol

VQ-024438

Reference Standard

Avapritinib Alcohol Impurity (R)-Isomer

Avapritinib Alcohol Impurity (R)-Isomer

CAS: 1703793-18-3
Formula: C₂₅H₂₄FN₉O
MW: 485.53 g/mol

VQ-024440

Reference Standard

Avapritinib Desamino Methyl Impurity

Avapritinib Desamino Methyl Impurity

CAS: 1703793-31-0
Formula: C₂₆H₂₇FN₁₀
MW: 498.57 g/mol

VQ-024439

Reference Standard

Avapritinib Impurity 9 chemical structure

Avapritinib Impurity 9

CAS: 1704496-81-0
Formula: C₁₇H₂₁FN₄
MW: 300.37 g/mol

VQ-047491

Reference Standard

Avatrombopag chemical structure

CAS: 570406-98-3
Formula: C₂₉H₃₄Cl₂N₆O₃S₂
MW: 649.7 g/mol

VQ-029296

Reference Standard

Avatrombopag Bromo acid Impurity chemical structure

Avatrombopag Bromo acid Impurity

CAS: 2883585-26-8
Formula: C₂₉H₃₃BrCl₂N₆O₃S₂
MW: 728.6 g/mol

VQ-029295

Reference Standard

Avatrombopag Diamide Impurity chemical structure

Avatrombopag Diamide Impurity

CAS: 2948773-23-5
Formula: C₄₆H₅₅Cl₃N₁₀O₂S₄
MW: 1014.6 g/mol

VQ-035867

Reference Standard

Avatrombopag Ester Impurity chemical structure

Avatrombopag Ester Impurity

CAS: 570403-14-4
Formula: C₃₁H₃₈Cl₂N₆O₃S₂
MW: 677.7 g/mol

VQ-024446

Reference Standard

Avatrombopag Impurity 12 chemical structure

Avatrombopag Impurity 12

CAS: 570407-42-0
Formula: C₁₇H₂₃ClN₄S₂
MW: 383 g/mol

In stock

Reference Standard

Avatrombopag Maleate chemical structure

Avatrombopag Maleate

CAS: 677007-74-8
Formula: C₃₃H₃₈Cl₂N₆O₇S₂
MW: 765.7 g/mol

VQ-024441

Reference Standard

Avatrombopag Methyl Ester Impurity chemical structure

Avatrombopag Methyl Ester Impurity

CAS: 2489330-90-5
Formula: C₃₀H₃₆Cl₂N₆O₃S₂
MW: 663.7 g/mol

VQ-045109

Reference Standard

Avenasterol chemical structure

CAS: 23290-26-8
Formula: C₂₉H₄₈O
MW: 412.7 g/mol

VQ-035870

Reference Standard

Avermectin A1a chemical structure

CAS: 65195-51-9
Formula: C₄₉H₇₄O₁₄
MW: 887.1 g/mol

VQ-029301

Reference Standard

Avermectin B1a Monosaccharide chemical structure

Avermectin B1a Monosaccharide

CAS: 71831-09-9
Formula: C₄₁H₆₀O₁₁
MW: 728.9 g/mol

VQ-031346

Reference Standard

Avibactam chemical structure

CAS: 1192500-31-4
Formula: C₇H₁₁N₃O₆S
MW: 265.25 g/mol

VQ-029306

Reference Standard

Avibactam Azabicyclo Ester Impurity chemical structure

Avibactam Azabicyclo Ester Impurity

CAS: 1416134-63-8
Formula: C₁₆H₂₀N₂O₄
MW: 304.34 g/mol

VQ-029308

Reference Standard

Avibactam Enantiomer (Sodium salt) chemical structure

Avibactam Enantiomer (Sodium salt)

CAS: 1383814-68-3
Formula: C₇H₁₀N₃NaO₆S
MW: 287.23 g/mol

VQ-024450

Reference Standard

Avibactam Sodium chemical structure

Avibactam Sodium

CAS: 1192491-61-4
Formula: C₇H₁₀N₃NaO₆S
MW: 287.23 g/mol

VQ-024447

Reference Standard

Avilamycin chemical structure

CAS: 11051-71-1
Formula: C₆₁H₈₈Cl₂O₃₂
MW: 1404.2 g/mol

VQ-029310

Reference Standard

Axitinib Acid chemical structure

CAS: 319462-34-5
Formula: C₂₁H₁₅N₃O₂S
MW: 373.4 g/mol

VQ-029311

Reference Standard

Axitinib Amide chemical structure

CAS: 319462-41-4
Formula: C₂₁H₁₆N₄OS
MW: 372.4 g/mol

VQ-043062

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