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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-Trityl Candesartan Methoxy Analogue chemical structure

N-Trityl Candesartan Methoxy Analogue

CAS: 1246820-94-9
Formula: C₄₂H₃₂N₆O₃
MW: 668.7 g/mol

VQ-036113

Reference Standard

N-Trityl Candesartan Methyl Ester Methoxy Analogue chemical structure

N-Trityl Candesartan Methyl Ester Methoxy Analogue

CAS: 1797136-91-4
Formula: C₄₃H₃₄N₆O₃
MW: 682.8 g/mol

VQ-043090

Reference Standard

N-Trityl Candesartan Trityl Ester chemical structure

N-Trityl Candesartan Trityl Ester

CAS: 1797113-00-8
Formula: C₆₂H₄₈N₆O₃
MW: 925.1 g/mol

VQ-035020

Reference Standard

N-Trityl Losartan Isomer chemical structure

N-Trityl Losartan Isomer

CAS: 150098-04-7
Formula: C₄₁H₃₇ClN₆O
MW: 665.2 g/mol

VQ-048950

Reference Standard

N-Trityl Olmesartan Ethyl Ester chemical structure

N-Trityl Olmesartan Ethyl Ester

CAS: 172875-59-1
Formula: C₄₅H₄₄N₆O₃
MW: 716.9 g/mol

VQ-026999

Reference Standard

N-Vanillyldecanamide chemical structure

N-Vanillyldecanamide

CAS: 31078-36-1
Formula: C₁₈H₂₉NO₃
MW: 307.4 g/mol

VQ-024757

Reference Standard

N,1-Dimethyl-4-(methyl(nitroso)amino)-1H-imidazole-5-carboxamide chemical structure

N,1-Dimethyl-4-(methyl(nitroso)amino)-1H-imidazole-5-carboxamide

CAS: 145438-96-6
Formula: C₇H₁₁N₅O₂
MW: 197.19 g/mol

VQ-021043

Reference Standard

N,2,3-Trimethyl-N-(2-((4-methyl-3-sulfamoylphenyl)amino)pyrimidin-4-yl)-2H-indazol-6-amine Oxide chemical structure

N,2,3-Trimethyl-N-(2-((4-methyl-3-sulfamoylphenyl)amino)pyrimidin-4-yl)-2H-indazol-6-amine Oxide

CAS: 1821666-73-2
Formula: C₂₁H₂₃N₇O₃S
MW: 453.5 g/mol

VQ-043605

Reference Standard

N,4-Dimethyl-1-benzyl-3-piperidinamine chemical structure

N,4-Dimethyl-1-benzyl-3-piperidinamine

CAS: 384338-23-2
Formula: C₁₄H₂₂N₂
MW: 218.34 g/mol

VQ-043332

Reference Standard

N,9-Diacetylguanine chemical structure

N,9-Diacetylguanine

CAS: 137226-08-5
Formula: C₉H₉N₅O₃
MW: 235.2 g/mol

VQ-035611

Reference Standard

N,N Bis(3-fluoro-4-(4-morpholinyl phenyl)urea chemical structure

N,N Bis(3-fluoro-4-(4-morpholinyl phenyl)urea

CAS: 2819018-79-4
Formula: C₂₁H₂₄F₂N₄O₃
MW: 418.4 g/mol

VQ-048901

Reference Standard

N,N Dimethyl Trofinetide

N,N Dimethyl Trofinetide

CAS: 2603450-10-6
Formula: C₁₅H₂₅N₃O₆
MW: 343.38 g/mol

VQ-042717

Reference Standard

N,N`-bis-(2-hydroxyethyl)phthaloyldiamide chemical structure

N,N`-bis-(2-hydroxyethyl)phthaloyldiamide

CAS: 19532-97-9
Formula: C₁₂H₁₆N₂O₄
MW: 252.27 g/mol

VQ-047389

Reference Standard

N,N`-Bis(hydroxyethoxyethyl)piperazine chemical structure

N,N`-Bis(hydroxyethoxyethyl)piperazine

CAS: 14258-43-6
Formula: C₁₂H₂₆N₂O₄
MW: 262.35 g/mol

VQ-041789

Reference Standard

N,N`-Dibenzylglycinamide chemical structure

N,N`-Dibenzylglycinamide

CAS: 1089-31-2
Formula: C₁₆H₁₈N₂O
MW: 254.33 g/mol

VQ-037990

Reference Standard

N,N`-Ethylenebisoleamide chemical structure

N,N`-Ethylenebisoleamide

CAS: 110-31-6
Formula: C₃₈H₇₂N₂O₂
MW: 589 g/mol

VQ-040021

Reference Standard

N,N-Bis(2-aminoethyl)nitrous amide chemical structure

N,N-Bis(2-aminoethyl)nitrous amide

CAS: 741659-46-1
Formula: C₄H₁₂N₄O
MW: 132.16 g/mol

In stock

Reference Standard

N,N-Bis(2-chloroethyl)-p-toluenesulfonamide chemical structure

N,N-Bis(2-chloroethyl)-p-toluenesulfonamide

CAS: 42137-88-2
Formula: C₁₁H₁₅Cl₂NO₂S
MW: 296.2 g/mol

VQ-031520

Reference Standard

N,N-Bis(2-chloroethyl)benzenesulfonamide chemical structure

N,N-Bis(2-chloroethyl)benzenesulfonamide

CAS: 58023-19-1
Formula: C₁₀H₁₃Cl₂NO₂S
MW: 282.19 g/mol

VQ-024911

Reference Standard

N,N-bis(2-chloroethyl)nitrous amide chemical structure

N,N-bis(2-chloroethyl)nitrous amide

CAS: 67856-68-2
Formula: C₄H₈Cl₂N₂O
MW: 171.02 g/mol

In stock

Reference Standard

N,N-bis(2-chloroethyl)nitrous amide Hydrochloride chemical structure

N,N-bis(2-chloroethyl)nitrous amide Hydrochloride

CAS: 63915-57-1
Formula: C₄H₉Cl₃N₂O
MW: 207.48 g/mol

VQ-006852

Reference Standard

N,N-Bis(2-cyanoethyl)nitrous amide chemical structure

N,N-Bis(2-cyanoethyl)nitrous amide

CAS: 1116-82-1
Formula: C₆H₈N₄O
MW: 152.15 g/mol

VQ-040092

Reference Standard

N,N-Bis(2-hydroxyethyl)-p-phenylenediamine sulphate chemical structure

N,N-Bis(2-hydroxyethyl)-p-phenylenediamine sulphate

CAS: 54381-16-7
Formula: C₁₀H₁₈N₂O₆S
MW: 294.33 g/mol

VQ-038937

Reference Standard

N,N-Bis(hydroxyethyl)tridecyl amine

N,N-Bis(hydroxyethyl)tridecyl amine

CAS: 68155-05-5
Formula: C₁₇H₃₇NO₂
MW: 287.5 g/mol

VQ-052208

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