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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.

27,990products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,098 Pharmacopeial Impurities (EP / USP / BP) 4,399 Nitrosamine Impurities 631 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,504 Metabolites & Degradation Products 3,922 API Reference Standards 3,436

Reference Standard

1-Nitroso-1H-benzo[d]imidazole chemical structure

1-Nitroso-1H-benzo[d]imidazole

CAS: 98273-46-2
Formula: C₇H₅N₃O
MW: 147.13 g/mol

VQ-047832

Reference Standard

1-Nitroso-1H-imidazole chemical structure

1-Nitroso-1H-imidazole

CAS: 1233340-45-8
Formula: C₃H₃N₃O
MW: 97.08 g/mol

VQ-023374

Reference Standard

1-Nitroso-1H-indazole-3-carbonitrile chemical structure

1-Nitroso-1H-indazole-3-carbonitrile

CAS: 98556-68-4
Formula: C₈H₄N₄O
MW: 172.14 g/mol

VQ-035228

Reference Standard

1-Nitroso-1H-indole chemical structure

1-Nitroso-1H-indole

CAS: 117782-96-4
Formula: C₈H₆N₂O
MW: 146.15 g/mol

VQ-028700

Reference Standard

1-Nitroso-1H-Pyrazole chemical structure

1-Nitroso-1H-Pyrazole

CAS: 146830-66-2
Formula: C₃H₃N₃O
MW: 97.08 g/mol

VQ-040284

Reference Standard

1-Nitroso-1H-pyrrole chemical structure

1-Nitroso-1H-pyrrole

CAS: 1233340-43-6
Formula: C₄H₄N₂O
MW: 96.09 g/mol

VQ-032700

Reference Standard

1-Nitroso-2,2,6,6-Tetramethylpiperidine chemical structure

1-Nitroso-2,2,6,6-Tetramethylpiperidine

CAS: 6130-93-4
Formula: C₉H₁₈N₂O
MW: 170.25 g/mol

VQ-027284

Reference Standard

1-Nitroso-3-piperidinamine chemical structure

1-Nitroso-3-piperidinamine

CAS: 2819242-71-0
Formula: C₅H₁₁N₃O
MW: 129.16 g/mol

VQ-006788

Reference Standard

1-Nitroso-3-Piperidinamine Trifluoroacetic Acid

1-Nitroso-3-Piperidinamine Trifluoroacetic Acid

Formula: C₅H₁₁N₃O.C₂HF₃O₂
MW: 243.18 g/mol

In stock

Reference Standard

1-Nitroso-3,5-dimethyladamantane chemical structure

1-Nitroso-3,5-dimethyladamantane

CAS: 1262583-10-7
Formula: C₁₂H₁₉NO
MW: 193.28 g/mol

VQ-032444

Reference Standard

1-Nitroso-4-Phenylpiperazine chemical structure

1-Nitroso-4-Phenylpiperazine

CAS: 14340-33-1
Formula: C₁₀H₁₃N₃O
MW: 191.23 g/mol

In stock

Reference Standard

1-Nitroso-4-Phenylpiperidine chemical structure

1-Nitroso-4-Phenylpiperidine

CAS: 6652-04-6
Formula: C₁₁H₁₄N₂O
MW: 190.24 g/mol

In stock

Reference Standard

1-Nitroso-L-histidine chemical structure

1-Nitroso-L-histidine

CAS: 932446-62-3
Formula: C₆H₈N₄O₃
MW: 184.15 g/mol

VQ-044811

Reference Standard

1-Nitroso-L-tryptophan chemical structure

1-Nitroso-L-tryptophan

CAS: 68807-89-6
Formula: C₁₁H₁₁N₃O₃
MW: 233.22 g/mol

VQ-028562

Reference Standard

1-Nitrosoazetidine-3-carboxylic acid chemical structure

1-Nitrosoazetidine-3-carboxylic acid

CAS: 102624-97-5
Formula: C₄H₆N₂O₃
MW: 130.1 g/mol

VQ-032926

Reference Standard

1-Nitrosohydantoin chemical structure

1-Nitrosohydantoin

CAS: 42579-28-2
Formula: C₃H₃N₃O₃
MW: 129.07 g/mol

VQ-032814

Reference Standard

1-Nitrosoindoline-2-carboxylic acid chemical structure

1-Nitrosoindoline-2-carboxylic acid

CAS: 192770-68-6
Formula: C₉H₈N₂O₃
MW: 192.17 g/mol

VQ-033136

Reference Standard

1-Nitrosopiperidine-4-carboxamide chemical structure

1-Nitrosopiperidine-4-carboxamide

CAS: 1254360-38-7
Formula: C₆H₁₁N₃O₂
MW: 157.17 g/mol

VQ-026656

Reference Standard

1-Nitrosopyrrolidine-2-carboxylic Acid chemical structure

1-Nitrosopyrrolidine-2-carboxylic Acid

CAS: 2571-28-0
Formula: C₅H₈N₂O₃
MW: 144.13 g/mol

VQ-032827

Reference Standard

1-O-Acetyl-2,3,5-tri-O-benzoyl-α,β-D-ribofuranose chemical structure

1-O-Acetyl-2,3,5-tri-O-benzoyl-α,β-D-ribofuranose

CAS: 14215-97-5
Formula: C₂₈H₂₄O₉
MW: 504.5 g/mol

VQ-043540

Reference Standard

1-O-Acetyl-2,3,5-tri-O-benzoyl-β-D-ribofuranose chemical structure

1-O-Acetyl-2,3,5-tri-O-benzoyl-β-D-ribofuranose

CAS: 6974-32-9
Formula: C₂₈H₂₄O₉
MW: 504.5 g/mol

VQ-020862

Reference Standard

1-O-Acetyl-3,5-bis(4-chlorobenzoyl)-2-deoxy-D-ribose chemical structure

1-O-Acetyl-3,5-bis(4-chlorobenzoyl)-2-deoxy-D-ribose

CAS: 1207459-15-1
Formula: C₂₁H₁₈Cl₂O₇
MW: 453.3 g/mol

VQ-025216

Reference Standard

1-Octadecanal chemical structure

CAS: 638-66-4
Formula: C₁₈H₃₆O
MW: 268.5 g/mol

VQ-043560

Reference Standard

1-Octadecylpyridin-1-ium chloride chemical structure

1-Octadecylpyridin-1-ium chloride

CAS: 3165-81-9
Formula: C₂₃H₄₂ClN
MW: 368 g/mol

VQ-027201

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