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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-[trans-4-[[[(4-Methylphenyl)sulfonyl]oxy]methyl]cyclohexyl]ethanesulfonamide chemical structure

N-[trans-4-[[[(4-Methylphenyl)sulfonyl]oxy]methyl]cyclohexyl]ethanesulfonamide

CAS: 2169920-33-4
Formula: C₁₆H₂₅NO₅S₂
MW: 375.5 g/mol

VQ-045156

Reference Standard

N-{[4-(Chloromethyl)-1,3-thiazol-2-yl]methyl}-N,N-dimethylamine chemical structure

N-{[4-(Chloromethyl)-1,3-thiazol-2-yl]methyl}-N,N-dimethylamine

CAS: 140176-73-4
Formula: C₇H₁₁ClN₂S
MW: 190.69 g/mol

VQ-032200

Reference Standard

N-{3-Chloro-4-[(3-fluorobenzyl) oxy] phenyl}- 6-iodoquinazolin-4-amine chemical structure

N-{3-Chloro-4-[(3-fluorobenzyl) oxy] phenyl}- 6-iodoquinazolin-4-amine

CAS: 231278-20-9
Formula: C₂₁H₁₄ClFIN₃O
MW: 505.7 g/mol

VQ-031446

Reference Standard

N-2-[(Dimethylamino)methylene]amino Pemetrexed chemical structure

N-2-[(Dimethylamino)methylene]amino Pemetrexed

CAS: 1265908-58-4
Formula: C₂₃H₂₆N₆O₆
MW: 482.5 g/mol

VQ-041377

Reference Standard

N-2-Chlorobenz-[b,f][1,4]oxazepine-11-yl Amoxapine chemical structure

N-2-Chlorobenz-[b,f][1,4]oxazepine-11-yl Amoxapine

CAS: 1216608-66-0
Formula: C₃₀H₂₂Cl₂N₄O₂
MW: 541.4 g/mol

VQ-021571

Reference Standard

N-2-Propynyl Rasagiline HCl chemical structure

N-2-Propynyl Rasagiline HCl

CAS: 2733311-45-8
Formula: C₁₅H₁₆ClN
MW: 245.74 g/mol

VQ-041847

Reference Standard

N-2-Pyridinyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide chemical structure

N-2-Pyridinyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide

CAS: 2180911-29-7
Formula: C₁₈H₂₁BN₂O₃
MW: 324.2 g/mol

VQ-028993

Reference Standard

N-4-Methoxybenzyl efavirenz chemical structure

N-4-Methoxybenzyl efavirenz

CAS: 174819-21-7
Formula: C₂₂H₁₇ClF₃NO₃
MW: 435.8 g/mol

VQ-021214

Reference Standard

N-Ac-Lanreotide

N-Ac-Lanreotide

CAS: 109605-17-6
Formula: C₅₆H₇₁N₁₁O₁₁S₂
MW: 1138.36 g/mol

VQ-026352

Reference Standard

N-Acetal Bromopride chemical structure

N-Acetal Bromopride

CAS: 94135-22-5
Formula: C₁₆H₂₄BrN₃O₃
MW: 386.28 g/mol

VQ-020994

Reference Standard

N-Acetoxyethyl Succinimide chemical structure

N-Acetoxyethyl Succinimide

CAS: 28833-81-0
Formula: C₈H₁₁NO₄
MW: 185.18 g/mol

VQ-036744

Reference Standard

N-Acetyl Benzocaine chemical structure

N-Acetyl Benzocaine

CAS: 5338-44-3
Formula: C₁₁H₁₃NO₃
MW: 207.23 g/mol

VQ-021779

Reference Standard

N-Acetyl Bisoprolol chemical structure

N-Acetyl Bisoprolol

CAS: 66722-65-4
Formula: C₂₀H₃₃NO₅
MW: 367.5 g/mol

VQ-024610

Reference Standard

N-Acetyl Dapsone chemical structure

N-Acetyl Dapsone

CAS: 565-20-8
Formula: C₁₄H₁₄N₂O₃S
MW: 290.34 g/mol

VQ-030038

Reference Standard

N-Acetyl Dapsone D4 chemical structure

N-Acetyl Dapsone D4

CAS: 2070015-08-4
Formula: C₁₄H₁₄N₂O₃S
MW: 294.36 g/mol

VQ-036551

Reference Standard

N-Acetyl Dapsone-d8 chemical structure

N-Acetyl Dapsone-d8

CAS: 1215635-13-4
Formula: C₁₄H₁₄N₂O₃S
MW: 298.39 g/mol

VQ-036550

Reference Standard

N-Acetyl Darunavir chemical structure

N-Acetyl Darunavir

CAS: 1546919-11-2
Formula: C₂₉H₃₉N₃O₈S
MW: 589.7 g/mol

VQ-030074

Reference Standard

N-Acetyl Demethyl Memantine chemical structure

N-Acetyl Demethyl Memantine

CAS: 778-09-6
Formula: C₁₃H₂₁NO
MW: 207.31 g/mol

VQ-038302

Reference Standard

N-Acetyl Deshydroxymethyl Fingolimod chemical structure

N-Acetyl Deshydroxymethyl Fingolimod

CAS: 177259-52-8
Formula: C₂₀H₃₃NO₂
MW: 319.5 g/mol

VQ-025787

Reference Standard

N-Acetyl Dorzolamide chemical structure

N-Acetyl Dorzolamide

CAS: 403848-09-9
Formula: C₁₂H₁₈N₂O₅S₃
MW: 366.5 g/mol

VQ-022436

Reference Standard

N-Acetyl Fluoxetine chemical structure

N-Acetyl Fluoxetine

CAS: 202122-33-6
Formula: C₁₉H₂₀F₃NO₂
MW: 351.4 g/mol

VQ-035158

Reference Standard

N-Acetyl Fluvoxamine Acid chemical structure

N-Acetyl Fluvoxamine Acid

CAS: 88699-87-0
Formula: C₁₆H₁₉F₃N₂O₄
MW: 360.33 g/mol

VQ-037389

Reference Standard

N-Acetyl Hypoxanthine chemical structure

N-Acetyl Hypoxanthine

CAS: 408531-05-5
Formula: C₇H₆N₄O₂
MW: 178.15 g/mol

VQ-035888

Reference Standard

N-Acetyl Iminostilbene chemical structure

N-Acetyl Iminostilbene

CAS: 19209-60-0
Formula: C₁₆H₁₃NO
MW: 235.28 g/mol

VQ-034849

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