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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

Amcinonide chemical structure

CAS: 51022-69-6
Formula: C₂₈H₃₅FO₇
MW: 502.6 g/mol

VQ-024231

Reference Standard

Amelubant chemical structure

CAS: 346735-24-8
Formula: C₃₃H₃₄N₂O₅
MW: 538.6 g/mol

VQ-051476

Reference Standard

Amenamevir chemical structure

CAS: 841301-32-4
Formula: C₂₄H₂₆N₄O₅S
MW: 482.6 g/mol

VQ-044709

Reference Standard

Ametryn chemical structure

CAS: 834-12-8
Formula: C₉H₁₇N₅S
MW: 227.33 g/mol

VQ-035676

Reference Standard

Amfenac chemical structure

CAS: 51579-82-9
Formula: C₁₅H₁₃NO₃
MW: 255.27 g/mol

VQ-034952

Reference Standard

Amfenac Ethyl Ester chemical structure

Amfenac Ethyl Ester

CAS: 61941-57-9
Formula: C₁₇H₁₇NO₃
MW: 283.32 g/mol

VQ-034979

Reference Standard

Amfenac keto Impurity chemical structure

Amfenac keto Impurity

CAS: 126849-37-4
Formula: C₁₅H₁₁NO₄
MW: 269.25 g/mol

VQ-004365

Reference Standard

Amfenac Methyl Ester chemical structure

Amfenac Methyl Ester

CAS: 61941-58-0
Formula: C₁₆H₁₅NO₃
MW: 269.29 g/mol

VQ-034978

Reference Standard

Amfenac Sodium chemical structure

CAS: 61941-56-8
Formula: C₁₅H₁₄NNaO₄
MW: 295.26 g/mol

VQ-029525

Reference Standard

Amfenac Sodium Salt hydrate chemical structure

Amfenac Sodium Salt hydrate

CAS: 61618-27-7
Formula: C₁₅H₁₄NNaO₄
MW: 295.26 g/mol

VQ-034977

Reference Standard

Amicoumacin B chemical structure

CAS: 82768-33-0
Formula: C₂₀H₂₈N₂O₈
MW: 424.4 g/mol

VQ-051924

Reference Standard

Amido Ethyl Meloxicam chemical structure

Amido Ethyl Meloxicam

CAS: 881399-30-0
Formula: C₁₆H₁₇N₃O₄S₂
MW: 379.5 g/mol

VQ-031774

Reference Standard

Amido Methyl Meloxicam chemical structure

Amido Methyl Meloxicam

CAS: 892395-41-4
Formula: C₁₅H₁₅N₃O₄S₂
MW: 365.4 g/mol

VQ-031773

Reference Standard

Amidotrizoic Acid chemical structure

Amidotrizoic Acid

CAS: 117-96-4
Formula: C₁₁H₉I₃N₂O₄
MW: 613.91 g/mol

VQ-029097

Reference Standard

Amidotrizoic Acid EP Impurity B chemical structure

Amidotrizoic Acid EP Impurity B

CAS: 162193-52-4
Formula: C₁₁H₁₀I₂N₂O₄
MW: 488.02 g/mol

VQ-021537

Reference Standard

Amidotrizoic Acid EP Impurity C chemical structure

Amidotrizoic Acid EP Impurity C

CAS: 162193-53-5
Formula: C₁₁H₁₀I₂N₂O₄
MW: 488.02 g/mol

VQ-021538

Reference Standard

Amifampridine chemical structure

CAS: 54-96-6
Formula: C₅H₇N₃
MW: 109.13 g/mol

VQ-024234

Reference Standard

Amifampridine Phosphate chemical structure

Amifampridine Phosphate

CAS: 446254-47-3
Formula: C₅H₁₀N₃O₄P
MW: 207.12 g/mol

VQ-029098

Reference Standard

Amifostine chemical structure

CAS: 20537-88-6
Formula: C₅H₁₅N₂O₃PS
MW: 214.23 g/mol

VQ-034953

Reference Standard

Amifostine Disulfide chemical structure

Amifostine Disulfide

CAS: 10027-65-3
Formula: C₁₀H₃₀Cl₄N₄S₂
MW: 412.3 g/mol

VQ-024236

Reference Standard

Amifostine Thiol chemical structure

Amifostine Thiol

CAS: 31098-42-7
Formula: C₅H₁₄N₂S
MW: 134.25 g/mol

VQ-035678

Reference Standard

Amifostine Thiol Dihydrochloride chemical structure

Amifostine Thiol Dihydrochloride

CAS: 14653-77-1
Formula: C₅H₁₆Cl₂N₂S
MW: 207.16 g/mol

VQ-021539

Reference Standard

Amifostine Trihydrate chemical structure

Amifostine Trihydrate

CAS: 112901-68-5
Formula: C₅H₂₁N₂O₆PS
MW: 268.27 g/mol

VQ-043454

Reference Standard

Amikacin EP Impurity A chemical structure

Amikacin EP Impurity A

CAS: 50725-24-1
Formula: C₂₂H₄₃N₅O₁₃
MW: 585.6 g/mol

VQ-021541

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