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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 Thiazolidine 4 Carboxylic Acid chemical structure

N-Nitroso Thiazolidine 4 Carboxylic Acid

CAS: 88381-44-6
Formula: C₄H₆N₂O₃S
MW: 162.17 g/mol

VQ-034982

Reference Standard

N-Nitroso Thiomorpholine chemical structure

N-Nitroso Thiomorpholine

CAS: 26541-51-5
Formula: C₄H₈N₂OS
MW: 132.19 g/mol

VQ-036485

Reference Standard

N-Nitroso Ticagrelor chemical structure

N-Nitroso Ticagrelor

CAS: 2476859-55-7
Formula: C₂₃H₂₇F₂N₇O₅S
MW: 551.6 g/mol

VQ-034233

Reference Standard

N-Nitroso Ticagrelor EP Impurity D chemical structure

N-Nitroso Ticagrelor EP Impurity D

CAS: 2476859-56-8
Formula: C₂₆H₃₁F₂N₇O₅S
MW: 591.6 g/mol

VQ-043915

Reference Standard

N-Nitroso Timolol chemical structure

N-Nitroso Timolol

Formula: C₁₃H₂₃N₅O₄S
MW: 345.42 g/mol

In stock

Reference Standard

N-Nitroso Timolol Impurity 2 chemical structure

N-Nitroso Timolol Impurity 2

CAS: 20002-25-9
Formula: C₁₁H₁₆N₂O
MW: 192.26 g/mol

In stock

Reference Standard

N-Nitroso Tolterodine EP Impurity E chemical structure

N-Nitroso Tolterodine EP Impurity E

CAS: 2680528-95-2
Formula: C₁₉H₂₄N₂O₂
MW: 312.4 g/mol

VQ-034336

Reference Standard

N-Nitroso Tropicamide EP Impurity A chemical structure

N-Nitroso Tropicamide EP Impurity A

CAS: 13256-23-0
Formula: C₈H₁₁N₃O
MW: 165.19 g/mol

VQ-042722

Reference Standard

N-Nitroso Tryptophol chemical structure

N-Nitroso Tryptophol

CAS: 120314-14-9
Formula: C₁₀H₁₀N₂O₂
MW: 190.2 g/mol

VQ-035271

Reference Standard

N-Nitroso Valsartan (Rotamers) chemical structure

N-Nitroso Valsartan (Rotamers)

CAS: 2254485-68-0
Formula: C₁₉H₂₀N₆O₃
MW: 380.4 g/mol

In stock

Reference Standard

N-Nitroso Valsartan Methyl Ester chemical structure

N-Nitroso Valsartan Methyl Ester

CAS: 2851532-34-6
Formula: C₂₀H₂₂N₆O₃
MW: 394.4 g/mol

In stock

Reference Standard

N-Nitroso Venlafaxine EP Impurity D chemical structure

N-Nitroso Venlafaxine EP Impurity D

CAS: 2680662-11-5
Formula: C₁₆H₂₄N₂O₃
MW: 292.37 g/mol

In stock

Reference Standard

N-Nitroso Vildagliptin chemical structure

N-Nitroso Vildagliptin

CAS: 3034601-47-0
Formula: C₁₇H₂₄N₄O₃
MW: 332.4 g/mol

VQ-028706

Reference Standard

N-Nitroso Viloxazine chemical structure

N-Nitroso Viloxazine

CAS: 35604-67-2
Formula: C₁₃H₂₀ClNO₃
MW: 273.75 g/mol

In stock

Reference Standard

N-Nitroso Vortioxetine chemical structure

N-Nitroso Vortioxetine

CAS: 2925447-38-5
Formula: C₁₈H₂₁N₃OS
MW: 327.4 g/mol

VQ-024033

Reference Standard

N-Nitroso-1,2,3,6-tetrahydropyridine chemical structure

N-Nitroso-1,2,3,6-tetrahydropyridine

CAS: 55556-92-8
Formula: C₅H₈N₂O
MW: 112.13 g/mol

In stock

Reference Standard

N-Nitroso-2-methylpiperidine chemical structure

N-Nitroso-2-methylpiperidine

CAS: 7247-89-4
Formula: C₆H₁₂N₂O
MW: 128.17 g/mol

VQ-049955

Reference Standard

N-Nitroso-2-Pyrrolidinone chemical structure

N-Nitroso-2-Pyrrolidinone

CAS: 54634-49-0
Formula: C₄H₆N₂O₂
MW: 114.1 g/mol

VQ-023376

Reference Standard

N-Nitroso-3-chloro-N-methylpropane-1-amine (Rotamers) chemical structure

N-Nitroso-3-chloro-N-methylpropane-1-amine (Rotamers)

Formula: C₄H₉ClN₂O
MW: 136.58 g/mol

VQ-006969

Reference Standard

N-Nitroso-3-Hydroxy Pyrrolidone chemical structure

N-Nitroso-3-Hydroxy Pyrrolidone

CAS: 2826147-23-1
Formula: C₄H₆N₂O₃
MW: 130.1 g/mol

In stock

Reference Standard

N-Nitroso-3-Pyrrolidinol chemical structure

N-Nitroso-3-Pyrrolidinol

CAS: 56222-35-6
Formula: C₄H₈N₂O₂
MW: 116.12 g/mol

In stock

Reference Standard

N-Nitroso-4-aminobenzoic Acid chemical structure

N-Nitroso-4-aminobenzoic Acid

CAS: 91673-51-7
Formula: C₇H₆N₂O₃
MW: 166.13 g/mol

VQ-047980

Reference Standard

N-Nitroso-4-Hydroxydiphenylamine chemical structure

N-Nitroso-4-Hydroxydiphenylamine

CAS: 69026-93-3
Formula: C₁₂H₁₀N₂O₂
MW: 214.22 g/mol

VQ-052081

Reference Standard

N-Nitroso-4-hydroxypiperidine chemical structure

N-Nitroso-4-hydroxypiperidine

CAS: 55556-93-9
Formula: C₅H₁₀N₂O₂
MW: 130.15 g/mol

VQ-023416

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