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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

Anhydro Pridinol chemical structure

Anhydro Pridinol

CAS: 13150-57-7
Formula: C₂₀H₂₃N
MW: 277.4 g/mol

VQ-033321

Reference Standard

Anhydrotetracycline Hydrochloride chemical structure

Anhydrotetracycline Hydrochloride

CAS: 13803-65-1
Formula: C₂₂H₂₃ClN₂O₇
MW: 462.9 g/mol

VQ-028313

Reference Standard

Anhydrous chlorobutanol chemical structure

Anhydrous chlorobutanol

CAS: 57-15-8
Formula: C₄H₇Cl₃O
MW: 177.45 g/mol

VQ-007315

Reference Standard

Anidulafungin chemical structure

CAS: 166663-25-8
Formula: C₅₈H₇₃N₇O₁₇
MW: 1140.2 g/mol

VQ-021599

Reference Standard

Anidulafungin Impurity E chemical structure

Anidulafungin Impurity E

CAS: 2099166-85-3
Formula: C₅₇H₇₁N₇O₁₇
MW: 1126.2 g/mol

VQ-021601

Reference Standard

Anidulafungin Thr-desmethyl impurity

Anidulafungin Thr-desmethyl impurity

CAS: 2099166-86-4
Formula: C₅₇H₇₁N₇O₁₇
MW: 1126.21 g/mol

VQ-021600

Reference Standard

Aniline-d5 chemical structure

CAS: 4165-61-1
Formula: C₆H₇N
MW: 98.16 g/mol

VQ-039734

Reference Standard

Aniracetam chemical structure

CAS: 72432-10-1
Formula: C₁₂H₁₃NO₃
MW: 219.24 g/mol

VQ-029169

Reference Standard

Anisodamine chemical structure

CAS: 17659-49-3
Formula: C₁₇H₂₃NO₄
MW: 305.4 g/mol

VQ-043480

Reference Standard

Anlotinib chemical structure

CAS: 1058156-90-3
Formula: C₂₃H₂₂FN₃O₃
MW: 407.4 g/mol

In stock

Reference Standard

Anlotinib Amide Impurity

Anlotinib Amide Impurity

Formula: C₂₆H₂₃Cl₂N₃O₅
MW: 528.38 g/mol

In stock

Reference Standard

Anlotinib Benzyl Impurity

Anlotinib Benzyl Impurity

Formula: C₁₇H₁₄ClNO₂
MW: 299.75 g/mol

In stock

Reference Standard

Anlotinib Impurity 1

Anlotinib Impurity 1

CAS: 2205042-80-2
Formula: C₃₀H₂₈FN₃O₃
MW: 497.56 g/mol

In stock

Reference Standard

Anlotinib Impurity 2

Anlotinib Impurity 2

CAS: 2205042-45-9
Formula: C₂₂H₂₀FN₃O₃
MW: 393.41 g/mol

In stock

Reference Standard

Anlotinib Impurity D

Anlotinib Impurity D

CAS: 1058156-88-9
Formula: C₃₁H₂₈FN₃O₅
MW: 541.6 g/mol

VQ-021602

Reference Standard

Annamycin chemical structure

CAS: 92689-49-1
Formula: C₂₆H₂₅IO₁₁
MW: 640.4 g/mol

VQ-045242

Reference Standard

Annonacin chemical structure

CAS: 111035-65-5
Formula: C₃₅H₆₄O₇
MW: 596.9 g/mol

VQ-039021

Reference Standard

Antazoline chemical structure

CAS: 91-75-8
Formula: C₁₇H₁₉N₃
MW: 265.35 g/mol

VQ-047409

Reference Standard

Antazoline Hydrochloride chemical structure

Antazoline Hydrochloride

CAS: 2508-72-7
Formula: C₁₇H₂₀ClN₃
MW: 301.8 g/mol

VQ-020810

Reference Standard

Antazoline Phosphate chemical structure

Antazoline Phosphate

CAS: 154-68-7
Formula: C₁₇H₂₂N₃O₄P
MW: 363.3 g/mol

VQ-035746

Reference Standard

Antazoline sulfate chemical structure

Antazoline sulfate

CAS: 24359-81-7
Formula: C₁₇H₂₁N₃O₄S
MW: 363.4 g/mol

VQ-035747

Reference Standard

Anthacrolein chemical structure

CAS: 38982-12-6
Formula: C₁₇H₁₂O
MW: 232.28 g/mol

VQ-043980

Reference Standard

Antheraxanthin chemical structure

CAS: 640-03-9
Formula: C₄₀H₅₆O₃
MW: 584.9 g/mol

VQ-047410

Reference Standard

Anthracene-d10 chemical structure

CAS: 1719-06-8
Formula: C₁₄H₁₀
MW: 188.29 g/mol

VQ-034933

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