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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

Vancomycin EP Impurity F chemical structure

Vancomycin EP Impurity F

CAS: 2415254-43-0
Formula: C₆₇H₇₇Cl₂N₉O₂₄
MW: 1463.3 g/mol

VQ-023980

Reference Standard

Vancomycin EP Impurity H chemical structure

Vancomycin EP Impurity H

CAS: 357396-41-9
Formula: C₆₆H₇₆ClN₉O₂₄
MW: 1414.8 g/mol

VQ-028877

Reference Standard

Vancomycin EP Impurity J chemical structure

Vancomycin EP Impurity J

CAS: 2416251-24-4
Formula: C₆₆H₇₅Cl₂N₉O₂₄
MW: 1449.2 g/mol

VQ-035038

Reference Standard

Vancomycin Methyl Ester chemical structure

Vancomycin Methyl Ester

CAS: 250273-66-6
Formula: C₆₇H₇₇Cl₂N₉O₂₄
MW: 1463.3 g/mol

VQ-034540

Reference Standard

Vandetanib chemical structure

CAS: 443913-73-3
Formula: C₂₂H₂₄BrFN₄O₂
MW: 475.4 g/mol

VQ-028631

Reference Standard

Vandetanib Impurity 2 chemical structure

Vandetanib Impurity 2

CAS: 196603-96-0
Formula: C₁₅H₁₁BrFN₃O₂
MW: 364.17 g/mol

In stock

Reference Standard

Vandetanib Impurity 3 chemical structure

Vandetanib Impurity 3

CAS: 768350-54-5
Formula: C₂₂H₁₇BrFN₃O₂
MW: 454.3 g/mol

In stock

Reference Standard

Vandetanib N-Oxide chemical structure

Vandetanib N-Oxide

CAS: 1797030-22-8
Formula: C₂₂H₂₄BrFN₄O₃
MW: 491.4 g/mol

VQ-034542

Reference Standard

Vanillylamine Hydrochloride chemical structure

Vanillylamine Hydrochloride

CAS: 7149-10-2
Formula: C₈H₁₂ClNO₂
MW: 189.64 g/mol

VQ-028634

Reference Standard

Vardenafil chemical structure

CAS: 224785-90-4
Formula: C₂₃H₃₂N₆O₄S
MW: 488.6 g/mol

VQ-042820

Reference Standard

Vardenafil Dihydrochloride Salt chemical structure

Vardenafil Dihydrochloride Salt

CAS: 224789-15-5
Formula: C₂₃H₃₄Cl₂N₆O₄S
MW: 561.5 g/mol

VQ-034543

Reference Standard

Vardenafil EP Impurity A chemical structure

Vardenafil EP Impurity A

CAS: 2169247-39-4
Formula: C₂₁H₂₈N₆O₄S
MW: 460.6 g/mol

VQ-023982

Reference Standard

Vardenafil EP Impurity B chemical structure

Vardenafil EP Impurity B

CAS: 437717-43-6
Formula: C₁₇H₂₀N₄O₅S
MW: 392.4 g/mol

VQ-028637

Reference Standard

Vardenafil EP Impurity C chemical structure

Vardenafil EP Impurity C

CAS: 1255919-03-9
Formula: C₃₈H₄₆N₁₀O₈S₂
MW: 835 g/mol

VQ-023983

Reference Standard

Vardenafil Hydrochloride chemical structure

Vardenafil Hydrochloride

CAS: 224785-91-5
Formula: C₂₃H₃₃ClN₆O₄S
MW: 525.1 g/mol

VQ-035501

Reference Standard

Vardenafil Hydrochloride Trihydrate chemical structure

Vardenafil Hydrochloride Trihydrate

CAS: 330808-88-3
Formula: C₂₃H₃₉ClN₆O₇S
MW: 579.1 g/mol

VQ-028635

Reference Standard

Vardenafil Impurity 1 chemical structure

Vardenafil Impurity 1

CAS: 1417529-67-9
Formula: C₁₇H₁₈N₄O₄
MW: 342.35 g/mol

VQ-028636

Reference Standard

Vardenafil Impurity 2 chemical structure

Vardenafil Impurity 2

CAS: 1417529-69-1
Formula: C₂₃H₃₀N₆O₆S
MW: 518.6 g/mol

VQ-028638

Reference Standard

Vardenafil Impurity 4 chemical structure

Vardenafil Impurity 4

CAS: 448184-56-3
Formula: C₂₁H₂₆N₆O₇S
MW: 506.5 g/mol

VQ-042821

Reference Standard

Vardenafil N-Oxide chemical structure

Vardenafil N-Oxide

CAS: 448184-48-3
Formula: C₂₃H₃₂N₆O₅S
MW: 504.6 g/mol

VQ-023981

Reference Standard

Vardenafil Oxopiperazine (Impurity) chemical structure

Vardenafil Oxopiperazine (Impurity)

CAS: 448184-58-5
Formula: C₂₁H₂₆N₆O₅S
MW: 474.5 g/mol

VQ-035024

Reference Standard

Varenicline chemical structure

CAS: 249296-44-4
Formula: C₁₃H₁₃N₃
MW: 211.26 g/mol

In stock

Reference Standard

Varenicline Amine Impurity chemical structure

Varenicline Amine Impurity

CAS: 230615-56-2
Formula: C₁₃H₁₃F₃N₂O
MW: 270.25 g/mol

VQ-006103

Reference Standard

Varenicline Carbamoyl-Beta-D-Glucuronide chemical structure

Varenicline Carbamoyl-Beta-D-Glucuronide

CAS: 535920-98-0
Formula: C₂₀H₂₁N₃O₈
MW: 431.4 g/mol

VQ-034552

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