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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-Methylene-2-(thiophen-2-yl)ethanamine chemical structure

N-Methylene-2-(thiophen-2-yl)ethanamine

CAS: 111954-31-5
Formula: C₇H₉NS
MW: 139.22 g/mol

VQ-036409

Reference Standard

N-Methylmethane sulfonamide chemical structure

N-Methylmethane sulfonamide

CAS: 1184-85-6
Formula: C₂H₇NO₂S
MW: 109.15 g/mol

VQ-042013

Reference Standard

N-MethylPentylamine chemical structure

N-MethylPentylamine

CAS: 25419-06-1
Formula: C₆H₁₅N
MW: 101.19 g/mol

VQ-027212

Reference Standard

N-Methylphthalimide chemical structure

N-Methylphthalimide

CAS: 550-44-7
Formula: C₉H₇NO₂
MW: 161.16 g/mol

VQ-023134

Reference Standard

N-Methylpyrazole-4-carboxamide chemical structure

N-Methylpyrazole-4-carboxamide

CAS: 1154383-52-4
Formula: C₅H₇N₃O
MW: 125.13 g/mol

VQ-033481

Reference Standard

N-Methylsuccinimide-d3 chemical structure

N-Methylsuccinimide-d3

CAS: 2411523-65-2
Formula: C₅H₇NO₂
MW: 116.13 g/mol

VQ-041219

Reference Standard

N-Methylsulfonyl Dofetilide chemical structure

N-Methylsulfonyl Dofetilide

CAS: 937195-03-4
Formula: C₂₀H₂₉N₃O₇S₃
MW: 519.7 g/mol

VQ-043143

Reference Standard

N-Methyltetrafluorophthalimide chemical structure

N-Methyltetrafluorophthalimide

CAS: 33795-85-6
Formula: C₉H₃F₄NO₂
MW: 233.12 g/mol

VQ-038508

Reference Standard

N-Methylvancomycin chemical structure

N-Methylvancomycin

CAS: 99759-13-4
Formula: C₆₇H₇₇Cl₂N₉O₂₄
MW: 1463.3 g/mol

VQ-023979

Reference Standard

N-Nitro-1,2,3,4-tetradehydro Argatroban chemical structure

N-Nitro-1,2,3,4-tetradehydro Argatroban

CAS: 74874-10-5
Formula: C₂₃H₃₁N₇O₇S
MW: 549.6 g/mol

VQ-021613

Reference Standard

N-Nitro-1,2,3,4-tetradehydro Argatroban Ethyl Ester chemical structure

N-Nitro-1,2,3,4-tetradehydro Argatroban Ethyl Ester

CAS: 74874-09-2
Formula: C₂₅H₃₅N₇O₇S
MW: 577.7 g/mol

VQ-024359

Reference Standard

N-Nitrosamine Tranexamic Acid Dimer Impurity (Rotamers) chemical structure

N-Nitrosamine Tranexamic Acid Dimer Impurity (Rotamers)

Formula: C₁₆H₂₆N₂O₅
MW: 326.39 g/mol

In stock

Reference Standard

N-Nitroso (S)-Piperidin-3-ol chemical structure

N-Nitroso (S)-Piperidin-3-ol

CAS: 2380680-64-6
Formula: C₅H₁₀N₂O₂
MW: 130.15 g/mol

VQ-026097

Reference Standard

N-Nitroso 4-Hydroxy-2,2,6,6-tetramethylpiperidine chemical structure

N-Nitroso 4-Hydroxy-2,2,6,6-tetramethylpiperidine

CAS: 55556-90-6
Formula: C₉H₁₈N₂O₂
MW: 186.25 g/mol

VQ-040502

Reference Standard

N-Nitroso Adenine chemical structure

N-Nitroso Adenine

CAS: 2615274-45-6
Formula: C₅H₄N₆O
MW: 164.13 g/mol

VQ-024142

Reference Standard

N-Nitroso Alogliptin Impurity A

N-Nitroso Alogliptin Impurity A

Formula: C₁₈H₂₀N₆O₃.ClH
MW: 404.85 g/mol

In stock

Reference Standard

N-Nitroso Amiodarone EP Impurity B chemical structure

N-Nitroso Amiodarone EP Impurity B

CAS: 678982-38-2
Formula: C₂₃H₂₄I₂N₂O₄
MW: 646.3 g/mol

VQ-021554

Reference Standard

N-Nitroso Amlodipine chemical structure

N-Nitroso Amlodipine

CAS: 3048033-49-1
Formula: C₂₀H₂₄ClN₃O₆
MW: 437.9 g/mol

VQ-029131

Reference Standard

N-Nitroso Apixaban Amino Acid Impurity

N-Nitroso Apixaban Amino Acid Impurity

Formula: C₂₅H₂₅N₅O₇
MW: 507.5 g/mol

In stock

Reference Standard

N-Nitroso Apixaban Amino Acid Impurity chemical structure

N-Nitroso Apixaban Amino Acid Impurity

CAS: 3094994-84-7
Formula: C₂₅H₂₆N₆O₆
MW: 506.5 g/mol

VQ-029180

Reference Standard

N-Nitroso Aprepitant Impurity 4 chemical structure

N-Nitroso Aprepitant Impurity 4

CAS: 77817-40-4
Formula: C₉H₁₂N₂O₂
MW: 180.2 g/mol

In stock

Reference Standard

N-Nitroso Arformoterol

N-Nitroso Arformoterol

Formula: C₁₉H₂₃N₃O₅
MW: 373.4 g/mol

VQ-006877

Reference Standard

N-Nitroso Aryl Lurasidone chemical structure

N-Nitroso Aryl Lurasidone

CAS: 37015-96-6
Formula: C₁₁H₁₂N₄OS
MW: 248.31 g/mol

VQ-035191

Reference Standard

N-Nitroso Atropine EP Impurity B chemical structure

N-Nitroso Atropine EP Impurity B

CAS: 55855-45-3
Formula: C₁₆H₂₀N₂O₄
MW: 304.34 g/mol

VQ-035856

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