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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

(R)-9-Hydroxy Risperidone chemical structure

(R)-9-Hydroxy Risperidone

CAS: 130049-85-3
Formula: C₂₃H₂₇FN₄O₃
MW: 426.5 g/mol

VQ-027837

Reference Standard

(R)-Acenocoumarol chemical structure

(R)-Acenocoumarol

CAS: 66556-77-2
Formula: C₁₉H₁₅NO₆
MW: 353.3 g/mol

VQ-029000

Reference Standard

(R)-Ambrisentan chemical structure

(R)-Ambrisentan

CAS: 1007358-76-0
Formula: C₂₂H₂₂N₂O₄
MW: 378.4 g/mol

VQ-020779

Reference Standard

(R)-Amino-(4-hydroxyphenyl)acetic Acid Methyl Ester Hydrochloride chemical structure

(R)-Amino-(4-hydroxyphenyl)acetic Acid Methyl Ester Hydrochloride

CAS: 57591-61-4
Formula: C₉H₁₂ClNO₃
MW: 217.65 g/mol

VQ-036211

Reference Standard

(R)-Atenolol chemical structure

CAS: 56715-13-0
Formula: C₁₄H₂₂N₂O₃
MW: 266.34 g/mol

VQ-024388

Reference Standard

(R)-Atenolol-d7 chemical structure

(R)-Atenolol-d7

CAS: 1309283-25-7
Formula: C₁₄H₂₂N₂O₃
MW: 273.38 g/mol

VQ-029243

Reference Standard

(R)-Atomoxetine EP Impurity A chemical structure

(R)-Atomoxetine EP Impurity A

CAS: 1212823-01-2
Formula: C₁₆H₁₉NO
MW: 241.33 g/mol

VQ-006204

Reference Standard

(R)-Atomoxetine EP Impurity A Hydrochloride chemical structure

(R)-Atomoxetine EP Impurity A Hydrochloride

CAS: 1212215-97-8
Formula: C₁₆H₂₀ClNO
MW: 277.79 g/mol

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Reference Standard

(R)-Azelastine Hydrochloride chemical structure

(R)-Azelastine Hydrochloride

CAS: 153408-28-7
Formula: C₂₂H₂₅Cl₂N₃O
MW: 418.4 g/mol

VQ-024471

Reference Standard

(R)-Baclofen chemical structure

CAS: 69308-37-8
Formula: C₁₀H₁₂ClNO₂
MW: 213.66 g/mol

VQ-024486

Reference Standard

(R)-BendrofluMethiazide chemical structure

(R)-BendrofluMethiazide

CAS: 1087345-31-0
Formula: C₁₅H₁₄F₃N₃O₄S₂
MW: 421.4 g/mol

VQ-043906

Reference Standard

(R)-Benzphetamine Hydrochloride chemical structure

(R)-Benzphetamine Hydrochloride

CAS: 28646-36-8
Formula: C₁₇H₂₂ClN
MW: 275.8 g/mol

VQ-029399

Reference Standard

(R)-Bepotastine chemical structure

(R)-Bepotastine

CAS: 190730-41-7
Formula: C₂₁H₂₅ClN₂O₃
MW: 388.9 g/mol

VQ-021791

Reference Standard

(R)-Bepotastine Besylate chemical structure

(R)-Bepotastine Besylate

CAS: 190730-42-8
Formula: C₂₇H₃₁ClN₂O₆S
MW: 547.1 g/mol

VQ-024563

Reference Standard

(R)-Bicalutamide chemical structure

(R)-Bicalutamide

CAS: 113299-40-4
Formula: C₁₈H₁₄F₄N₂O₄S
MW: 430.4 g/mol

VQ-029430

Reference Standard

(R)-Bortezomib Hydroperoxy Impurity chemical structure

(R)-Bortezomib Hydroperoxy Impurity

CAS: 886979-78-8
Formula: C₁₉H₂₄N₄O₄
MW: 372.4 g/mol

VQ-020974

Reference Standard

(R)-Bupivacaine chemical structure

(R)-Bupivacaine

CAS: 27262-45-9
Formula: C₁₈H₂₈N₂O
MW: 288.4 g/mol

VQ-045120

Reference Standard

(R)-Butyl 2-hydroxybutanoate chemical structure

(R)-Butyl 2-hydroxybutanoate

CAS: 928835-95-4
Formula: C₈H₁₆O₃
MW: 160.21 g/mol

VQ-033086

Reference Standard

(R)-Camptothecin chemical structure

(R)-Camptothecin

CAS: 110351-92-3
Formula: C₂₀H₁₆N₂O₄
MW: 348.4 g/mol

VQ-024733

Reference Standard

(R)-Carbidopa chemical structure

CAS: 28875-92-5
Formula: C₁₀H₁₄N₂O₄
MW: 226.23 g/mol

VQ-022001

Reference Standard

(R)-Cefpodoxime Proxetil

(R)-Cefpodoxime Proxetil

CAS: 112345-70-7
Formula: C₂₁H₂₇N₅O₉S₂
MW: 557.59 g/mol

VQ-029701

Reference Standard

(R)-Cetirizine N-Oxide chemical structure

(R)-Cetirizine N-Oxide

CAS: 442863-80-1
Formula: C₂₁H₂₅ClN₂O₄
MW: 404.9 g/mol

VQ-007082

Reference Standard

(R)-Cinacalcet-D3 chemical structure

(R)-Cinacalcet-D3

CAS: 1228567-12-1
Formula: C₂₂H₂₂F₃N
MW: 360.4 g/mol

VQ-029816

Reference Standard

(R)-Cis-5??-Methyl Atracurium Dibesylate chemical structure

(R)-Cis-5??-Methyl Atracurium Dibesylate

CAS: 1193104-82-3
Formula: C₅₄H₇₄N₂O₁₂⁺2
MW: 943.2 g/mol

VQ-024426

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