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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 Enalapril chemical structure

N-Nitroso Enalapril

CAS: 2994317-06-3
Formula: C₂₀H₂₇N₃O₆
MW: 405.4 g/mol

VQ-044251

Reference Standard

N-Nitroso Enzalutamide Impurity D

N-Nitroso Enzalutamide Impurity D

Formula: C₂₀H₁₇F₄N₅O₃
MW: 451.37 g/mol

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Reference Standard

N-Nitroso Epinephrine chemical structure

N-Nitroso Epinephrine

CAS: 3006789-99-4
Formula: C₉H₁₂N₂O₄
MW: 212.2 g/mol

VQ-044312

Reference Standard

N-Nitroso Ethylene Diamino Triacetic Acid chemical structure

N-Nitroso Ethylene Diamino Triacetic Acid

CAS: 862542-34-5
Formula: C₈H₁₃N₃O₇
MW: 263.2 g/mol

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Reference Standard

N-Nitroso Ethylene Diamino Triacetic Acid (TFA Salt) chemical structure

N-Nitroso Ethylene Diamino Triacetic Acid (TFA Salt)

CAS: 862542-34-5
Formula: C₈H₁₃N₃O₇
MW: 263.2 g/mol

VQ-006899

Reference Standard

N-Nitroso Evocalcet chemical structure

N-Nitroso Evocalcet

CAS: 3051508-93-8
Formula: C₂₄H₂₅N₃O₃
MW: 403.5 g/mol

VQ-037169

Reference Standard

N-Nitroso Ezetimibe Impurity

N-Nitroso Ezetimibe Impurity

Formula: C₃₃H₂₉F₂N₃O₆
MW: 601.6 g/mol

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Reference Standard

N-Nitroso Ezetimibe Open-Ring Acid

N-Nitroso Ezetimibe Open-Ring Acid

Formula: C₂₄H₂₂F₂N₂O₅
MW: 456.44 g/mol

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Reference Standard

N-Nitroso Fenfluramine chemical structure

N-Nitroso Fenfluramine

CAS: 19023-40-6
Formula: C₁₂H₁₅F₃N₂O
MW: 260.26 g/mol

VQ-027316

Reference Standard

N-Nitroso Flecainide chemical structure

N-Nitroso Flecainide

CAS: 2901109-58-6
Formula: C₁₇H₁₉F₆N₃O₄
MW: 443.34 g/mol

VQ-024096

Reference Standard

N-Nitroso Flufenamic Acid chemical structure

N-Nitroso Flufenamic Acid

CAS: 23595-00-8
Formula: C₁₄H₉F₃N₂O₃
MW: 310.23 g/mol

VQ-025663

Reference Standard

N-Nitroso Fluoxetine chemical structure

N-Nitroso Fluoxetine

CAS: 150494-06-7
Formula: C₁₇H₁₇F₃N₂O₂
MW: 338.32 g/mol

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Reference Standard

N-Nitroso Folic Acid chemical structure

N-Nitroso Folic Acid

CAS: 26360-21-4
Formula: C₁₉H₁₈N₈O₇
MW: 470.4 g/mol

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Reference Standard

N-Nitroso Folic acid chemical structure

N-Nitroso Folic acid

CAS: 29291-35-8
Formula: C₁₉H₁₈N₈O₇
MW: 470.4 g/mol

VQ-037396

Reference Standard

N-Nitroso Folic Acid Impurity D

N-Nitroso Folic Acid Impurity D

Formula: C₁₄H₁₁N₇O₄
MW: 341.28 g/mol

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Reference Standard

N-Nitroso Frovatriptan Impurity 1 chemical structure

N-Nitroso Frovatriptan Impurity 1

Formula: C₁₄H₁₆N₄O₂
MW: 272.3 g/mol

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Reference Standard

N-Nitroso Gabapentin EP Impurity A chemical structure

N-Nitroso Gabapentin EP Impurity A

CAS: 856068-98-9
Formula: C₉H₁₄N₂O₂
MW: 182.22 g/mol

VQ-030924

Reference Standard

N-Nitroso Glycine chemical structure

N-Nitroso Glycine

CAS: 158179-60-3
Formula: C₂H₄N₂O₃
MW: 104.07 g/mol

VQ-040763

Reference Standard

N-Nitroso Hydrochlorothiazide chemical structure

N-Nitroso Hydrochlorothiazide

CAS: 63779-86-2
Formula: C₇H₇ClN₄O₅S₂
MW: 326.7 g/mol

In stock

Reference Standard

N-Nitroso Hydroxychloroquine EP Impurity C chemical structure

N-Nitroso Hydroxychloroquine EP Impurity C

Formula: C₁₆H₂₁ClN₄O₂
MW: 336.81 g/mol

In stock

Reference Standard

N-Nitroso Hydroxychloroquine EP Impurity D chemical structure

N-Nitroso Hydroxychloroquine EP Impurity D

Formula: C₁₆H₂₁ClN₄O
MW: 320.82 g/mol

In stock

Reference Standard

N-Nitroso Iminostilbene chemical structure

N-Nitroso Iminostilbene

CAS: 38652-29-8
Formula: C₁₄H₁₀N₂O
MW: 222.24 g/mol

VQ-021997

Reference Standard

N-Nitroso Indoline chemical structure

N-Nitroso Indoline

CAS: 7633-57-0
Formula: C₈H₈N₂O
MW: 148.16 g/mol

VQ-032675

Reference Standard

N-Nitroso Itraconazole Impurity 1 chemical structure

N-Nitroso Itraconazole Impurity 1

CAS: 75051-59-1
Formula: C₁₁H₁₅N₃O₂
MW: 221.26 g/mol

In stock

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