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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-Desmethylsulfonyl Lenacapavir chemical structure

N-Desmethylsulfonyl Lenacapavir

CAS: 2375020-20-3
Formula: C₃₈H₃₀ClF₁₀N₇O₃S
MW: 890.2 g/mol

VQ-045018

Reference Standard

N-Desmethylsulfonyl-N`-Methylsulfonyl Dofetilide chemical structure

N-Desmethylsulfonyl-N`-Methylsulfonyl Dofetilide

CAS: 937194-99-5
Formula: C₁₉H₂₇N₃O₅S₂
MW: 441.6 g/mol

VQ-036768

Reference Standard

N-Desmethylthioridazine chemical structure

N-Desmethylthioridazine

CAS: 10538-32-6
Formula: C₂₀H₂₄N₂S₂
MW: 356.6 g/mol

VQ-043656

Reference Standard

N-Desmethyltramadol chemical structure

N-Desmethyltramadol

CAS: 73806-55-0
Formula: C₁₅H₂₃NO₂
MW: 249.35 g/mol

VQ-035438

Reference Standard

N-Desmethyltrifluoperazine dihydrochloride chemical structure

N-Desmethyltrifluoperazine dihydrochloride

CAS: 4617-82-7
Formula: C₂₀H₂₄Cl₂F₃N₃S
MW: 466.4 g/mol

VQ-034432

Reference Standard

N-Despropargyl N-(1-Chloroprop-1-ene) Rasagiline chemical structure

N-Despropargyl N-(1-Chloroprop-1-ene) Rasagiline

CAS: 1175018-74-2
Formula: C₁₂H₁₄ClN
MW: 207.7 g/mol

VQ-043925

Reference Standard

N-Despropargyl N-(1-Chloroprop-1-ene) Rasagiline Hydrochloride chemical structure

N-Despropargyl N-(1-Chloroprop-1-ene) Rasagiline Hydrochloride

CAS: 1175018-80-0
Formula: C₁₂H₁₅Cl₂N
MW: 244.16 g/mol

VQ-041843

Reference Standard

N-Despropyl Acotiamide chemical structure

N-Despropyl Acotiamide

CAS: 701197-05-9
Formula: C₁₈H₂₄N₄O₅S
MW: 408.5 g/mol

VQ-047324

Reference Standard

N-Despropyl Pergolide chemical structure

N-Despropyl Pergolide

CAS: 72821-91-1
Formula: C₁₆H₂₀N₂S
MW: 272.4 g/mol

VQ-033130

Reference Standard

N-Despropyl Pergolide 6-Carbonitrile chemical structure

N-Despropyl Pergolide 6-Carbonitrile

CAS: 98988-34-2
Formula: C₁₇H₁₉N₃S
MW: 297.4 g/mol

VQ-033129

Reference Standard

N-Despropyl Propafenone Hydrochloride chemical structure

N-Despropyl Propafenone Hydrochloride

CAS: 1188263-52-6
Formula: C₁₈H₂₂ClNO₃
MW: 335.8 g/mol

VQ-041711

Reference Standard

N-Despropyl Propafenone Oxalate Salt chemical structure

N-Despropyl Propafenone Oxalate Salt

CAS: 93885-20-2
Formula: C₂₀H₂₃NO₇
MW: 389.4 g/mol

VQ-041707

Reference Standard

N-Despropyl-N-Ethyl Macitentan chemical structure

N-Despropyl-N-Ethyl Macitentan

CAS: 441796-13-0
Formula: C₁₈H₁₈Br₂N₆O₄S
MW: 574.2 g/mol

VQ-021268

Reference Standard

N-Despropyl-N-Methyl Macitentan chemical structure

N-Despropyl-N-Methyl Macitentan

CAS: 441798-25-0
Formula: C₁₇H₁₆Br₂N₆O₄S
MW: 560.2 g/mol

VQ-023024

Reference Standard

N-Despropylpropafenone chemical structure

N-Despropylpropafenone

CAS: 86383-21-3
Formula: C₁₈H₂₁NO₃
MW: 299.4 g/mol

VQ-027653

Reference Standard

N-Didesmethyl Bedaquiline chemical structure

N-Didesmethyl Bedaquiline

CAS: 955404-04-3
Formula: C₃₀H₂₇BrN₂O₂
MW: 527.4 g/mol

VQ-047530

Reference Standard

N-Didesmethyl Citalopram Oxalate chemical structure

N-Didesmethyl Citalopram Oxalate

CAS: 62498-70-8
Formula: C₂₀H₁₉FN₂O₅
MW: 386.4 g/mol

VQ-044309

Reference Standard

N-Didesmethyl Loperamide chemical structure

N-Didesmethyl Loperamide

CAS: 66164-06-5
Formula: C₂₇H₂₉ClN₂O₂
MW: 449 g/mol

VQ-038110

Reference Standard

N-Dimethyl Enzalutamide chemical structure

N-Dimethyl Enzalutamide

CAS: 1443331-78-9
Formula: C₂₂H₁₈F₄N₄O₂S
MW: 478.5 g/mol

VQ-030502

Reference Standard

n-Dodecylphosphocholine (unlabelled) chemical structure

n-Dodecylphosphocholine (unlabelled)

CAS: 29557-51-5
Formula: C₁₇H₃₈NO₄P
MW: 351.5 g/mol

VQ-038409

Reference Standard

N-Ethoxycarbonyl 7-ADCA chemical structure

N-Ethoxycarbonyl 7-ADCA

CAS: 72820-16-7
Formula: C₁₁H₁₄N₂O₅S
MW: 286.31 g/mol

VQ-021085

Reference Standard

N-Ethoxycarbonyl Ciprofloxacin chemical structure

N-Ethoxycarbonyl Ciprofloxacin

CAS: 93594-29-7
Formula: C₂₀H₂₂FN₃O₅
MW: 403.4 g/mol

VQ-024991

Reference Standard

N-Ethyl Azilsartan Medoxomil chemical structure

N-Ethyl Azilsartan Medoxomil

CAS: 1417576-01-2
Formula: C₃₂H₂₈N₄O₈
MW: 596.6 g/mol

VQ-021710

Reference Standard

N-Ethyl Esmolol chemical structure

N-Ethyl Esmolol

CAS: 2469273-97-8
Formula: C₁₅H₂₃NO₄
MW: 281.35 g/mol

VQ-025611

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