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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

N-Desethyl Brinzolamide Oxalate chemical structure

N-Desethyl Brinzolamide Oxalate

CAS: 2775292-24-3
Formula: C₁₂H₁₉N₃O₉S₃
MW: 445.5 g/mol

VQ-043491

Reference Standard

N-Desethyl Chloroquine Hydrochloride chemical structure

N-Desethyl Chloroquine Hydrochloride

CAS: 4298-11-7
Formula: C₁₆H₂₃Cl₂N₃
MW: 328.3 g/mol

VQ-036253

Reference Standard

N-Desethyl Clomiphene chemical structure

N-Desethyl Clomiphene

CAS: 78693-91-1
Formula: C₂₄H₂₄ClNO
MW: 377.9 g/mol

VQ-036389

Reference Standard

N-Desethyl Metoclopramide chemical structure

N-Desethyl Metoclopramide

CAS: 27260-19-1
Formula: C₁₂H₁₈ClN₃O₂
MW: 271.74 g/mol

VQ-038377

Reference Standard

N-Desethyl Oxybutynin Hydrochloride chemical structure

N-Desethyl Oxybutynin Hydrochloride

CAS: 81039-77-2
Formula: C₂₀H₂₈ClNO₃
MW: 365.9 g/mol

VQ-041276

Reference Standard

N-Desethyl Oxybutynin-D5 Hydrochloride chemical structure

N-Desethyl Oxybutynin-D5 Hydrochloride

CAS: 1173147-63-1
Formula: C₂₀H₂₈ClNO₃
MW: 370.9 g/mol

VQ-043398

Reference Standard

N-Desethyl Sunitinib chemical structure

N-Desethyl Sunitinib

CAS: 356068-97-8
Formula: C₂₀H₂₃FN₄O₂
MW: 370.4 g/mol

In stock

Reference Standard

N-Desethyl Vardenafil chemical structure

N-Desethyl Vardenafil

CAS: 448184-46-1
Formula: C₂₁H₂₈N₆O₄S
MW: 460.6 g/mol

VQ-023987

Reference Standard

N-Desethyl-N-methyl Vardenafil chemical structure

N-Desethyl-N-methyl Vardenafil

CAS: 224785-87-9
Formula: C₂₂H₃₀N₆O₄S
MW: 474.6 g/mol

VQ-023985

Reference Standard

N-Desethylsunitinib (Mixture)

N-Desethylsunitinib (Mixture)

CAS: 356069-16-4
Formula: C₂₀H₂₃FN₄O₂
MW: 370.42 g/mol

VQ-007198

Reference Standard

N-Desethylsunitinib hydrochloride chemical structure

N-Desethylsunitinib hydrochloride

CAS: 1261432-05-6
Formula: C₂₀H₂₄ClFN₄O₂
MW: 406.9 g/mol

VQ-007199

Reference Standard

N-Deshydroxyethyl N-Nitroso Dasatinib (Mixture of Isomers) chemical structure

N-Deshydroxyethyl N-Nitroso Dasatinib (Mixture of Isomers)

CAS: 2135905-86-9
Formula: C₂₀H₂₁ClN₈O₂S
MW: 473 g/mol

VQ-021202

Reference Standard

N-Desisopropayl Maribavir chemical structure

N-Desisopropayl Maribavir

CAS: 176161-52-7
Formula: C₁₂H₁₃Cl₂N₃O₄
MW: 334.15 g/mol

VQ-035479

Reference Standard

N-Desisopropyl desfesoterodine chemical structure

N-Desisopropyl desfesoterodine

CAS: 194482-42-3
Formula: C₁₉H₂₅NO₂
MW: 299.4 g/mol

VQ-030715

Reference Standard

N-Desisopropyl Metoprolol chemical structure

N-Desisopropyl Metoprolol

CAS: 74027-60-4
Formula: C₁₂H₁₉NO₃
MW: 225.28 g/mol

VQ-031857

Reference Standard

N-Desisopropyl N-Chlorophenylchlorguanide Hydrochloride chemical structure

N-Desisopropyl N-Chlorophenylchlorguanide Hydrochloride

CAS: 13590-98-2
Formula: C₁₄H₁₄Cl₃N₅
MW: 358.6 g/mol

VQ-033343

Reference Standard

N-Desisopropyl-N-formyl Bisoprolol chemical structure

N-Desisopropyl-N-formyl Bisoprolol

CAS: 1346602-59-2
Formula: C₁₆H₂₅NO₅
MW: 311.37 g/mol

VQ-029453

Reference Standard

N-Desmethoxypropyl N-Carbethoxy Plucalopride chemical structure

N-Desmethoxypropyl N-Carbethoxy Plucalopride

CAS: 137211-63-3
Formula: C₁₇H₂₂ClN₃O₄
MW: 367.8 g/mol

VQ-033384

Reference Standard

N-Desmethyl -N-Nitroso Imatinib chemical structure

N-Desmethyl -N-Nitroso Imatinib

CAS: 2816369-80-7
Formula: C₂₈H₂₈N₈O₂
MW: 508.6 g/mol

VQ-031171

Reference Standard

N-Desmethyl Alosetron Impurity chemical structure

N-Desmethyl Alosetron Impurity

CAS: 122852-63-5
Formula: C₁₆H₁₆N₄O
MW: 280.32 g/mol

VQ-029074

Reference Standard

N-Desmethyl apalutamide chemical structure

N-Desmethyl apalutamide

CAS: 1332391-11-3
Formula: C₂₀H₁₃F₄N₅O₂S
MW: 463.4 g/mol

VQ-024305

Reference Standard

N-Desmethyl Asenapine chemical structure

N-Desmethyl Asenapine

CAS: 128915-56-0
Formula: C₁₆H₁₄ClNO
MW: 271.74 g/mol

VQ-035133

Reference Standard

N-Desmethyl Asenapine Hydrochloride chemical structure

N-Desmethyl Asenapine Hydrochloride

CAS: 1170701-78-6
Formula: C₁₆H₁₅Cl₂NO
MW: 308.2 g/mol

VQ-021628

Reference Standard

N-Desmethyl Atomoxetine Impurity chemical structure

N-Desmethyl Atomoxetine Impurity

CAS: 109306-10-7
Formula: C₁₆H₁₉NO
MW: 241.33 g/mol

VQ-035825

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