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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-Nitroso-4-Piperidone chemical structure

N-Nitroso-4-Piperidone

CAS: 55556-91-7
Formula: C₅H₈N₂O₂
MW: 128.13 g/mol

In stock

Reference Standard

N-Nitroso-5-Hydroxy Pyrrolidone chemical structure

N-Nitroso-5-Hydroxy Pyrrolidone

CAS: 2832789-51-0
Formula: C₄H₆N₂O₃
MW: 130.1 g/mol

In stock

Reference Standard

N-Nitroso-Acebutolol chemical structure

N-Nitroso-Acebutolol

CAS: 3038740-99-4
Formula: C₁₈H₂₇N₃O₅
MW: 365.4 g/mol

VQ-044178

Reference Standard

N-Nitroso-Ambroxol chemical structure

N-Nitroso-Ambroxol

Formula: C₁₃H₁₇Br₂N₃O₂
MW: 407.1 g/mol

In stock

Reference Standard

N-Nitroso-Atenolol chemical structure

N-Nitroso-Atenolol

CAS: 134720-04-0
Formula: C₁₄H₂₁N₃O₄
MW: 295.33 g/mol

VQ-020847

Reference Standard

N-Nitroso-Atomoxetine chemical structure

N-Nitroso-Atomoxetine

CAS: 3028194-77-3
Formula: C₁₇H₂₀N₂O₂
MW: 284.35 g/mol

VQ-024395

Reference Standard

N-Nitroso-Bisoprolol chemical structure

N-Nitroso-Bisoprolol

CAS: 2820170-76-9
Formula: C₁₈H₃₀N₂O₅
MW: 354.4 g/mol

In stock

Reference Standard

N-Nitroso-Cinacalcet chemical structure

N-Nitroso-Cinacalcet

CAS: 3036581-83-3
Formula: C₂₂H₂₁F₃N₂O
MW: 386.4 g/mol

In stock

Reference Standard

N-Nitroso-Cyclamate chemical structure

N-Nitroso-Cyclamate

CAS: 70365-40-1
Formula: C₆H₁₂N₂O₄S
MW: 208.24 g/mol

VQ-033892

Reference Standard

N-Nitroso-D-proline chemical structure

N-Nitroso-D-proline

CAS: 42022-03-7
Formula: C₅H₈N₂O₃
MW: 144.13 g/mol

VQ-042901

Reference Standard

N-Nitroso-D,L-Pipecolic Acid chemical structure

N-Nitroso-D,L-Pipecolic Acid

CAS: 4515-18-8
Formula: C₆H₁₀N₂O₃
MW: 158.16 g/mol

In stock

Reference Standard

N-Nitroso-Desmethyl Itopride

N-Nitroso-Desmethyl Itopride

CAS: 2763751-66-0
Formula: C₁₉H₂₃N₃O₅
MW: 373.4 g/mol

VQ-026249

Reference Standard

N-Nitroso-desmethyl Promethazine chemical structure

N-Nitroso-desmethyl Promethazine

CAS: 94511-44-1
Formula: C₁₆H₁₇N₃OS
MW: 299.4 g/mol

VQ-027650

Reference Standard

N-Nitroso-desmethyl-imipramine chemical structure

N-Nitroso-desmethyl-imipramine

CAS: 57164-17-7
Formula: C₁₈H₂₁N₃O
MW: 295.4 g/mol

VQ-026151

Reference Standard

N-Nitroso-Desmethyl-Spinosad Factor A chemical structure

N-Nitroso-Desmethyl-Spinosad Factor A

CAS: 252575-85-2
Formula: C₄₀H₆₂N₂O₁₁
MW: 746.9 g/mol

In stock

Reference Standard

N-Nitroso-Desmethyl-Spinosad Factor D chemical structure

N-Nitroso-Desmethyl-Spinosad Factor D

Formula: C₄₁H₆₄N₂O₁₁
MW: 761 g/mol

In stock

Reference Standard

N-Nitroso-desmethyl-zolmitriptan chemical structure

N-Nitroso-desmethyl-zolmitriptan

CAS: 3085658-77-8
Formula: C₁₅H₁₈N₄O₃
MW: 302.33 g/mol

VQ-043014

Reference Standard

N-Nitroso-Desvaleryl-valsartan cyano impurity

N-Nitroso-Desvaleryl-valsartan cyano impurity

CAS: 2407652-86-0
Formula: C₁₉H₁₉N₃O₃
MW: 337.37 g/mol

VQ-023976

Reference Standard

N-Nitroso-di-n-butylamine chemical structure

N-Nitroso-di-n-butylamine

CAS: 924-16-3
Formula: C₈H₁₈N₂O
MW: 158.24 g/mol

In stock

Reference Standard

N-Nitroso-di-n-butylamine-d18 chemical structure

N-Nitroso-di-n-butylamine-d18

CAS: 1219798-82-9
Formula: C₈H₁₈N₂O
MW: 176.35 g/mol

VQ-042813

Reference Standard

N-Nitroso-Diclofenac chemical structure

N-Nitroso-Diclofenac

CAS: 66505-80-4
Formula: C₁₄H₁₀Cl₂N₂O₃
MW: 325.1 g/mol

VQ-021206

Reference Standard

N-Nitroso-Ditertbutylamine chemical structure

N-Nitroso-Ditertbutylamine

CAS: 63819-70-5
Formula: C₈H₁₈N₂O
MW: 158.24 g/mol

VQ-038818

Reference Standard

N-Nitroso-DL-Proline-d3 chemical structure

N-Nitroso-DL-Proline-d3

CAS: 65807-08-1
Formula: C₅H₈N₂O₃
MW: 147.15 g/mol

VQ-041204

Reference Standard

N-Nitroso-Furosemide chemical structure

N-Nitroso-Furosemide

CAS: 2708280-93-5
Formula: C₁₂H₁₀ClN₃O₆S
MW: 359.74 g/mol

VQ-030911

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