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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-Hydroxy-4-nitrobenzimidamide chemical structure

N-Hydroxy-4-nitrobenzimidamide

CAS: 1613-86-1
Formula: C₇H₇N₃O₃
MW: 181.15 g/mol

VQ-051226

Reference Standard

N-Hydroxy-N-Methylnitrous Amide chemical structure

N-Hydroxy-N-Methylnitrous Amide

CAS: 96591-75-2
Formula: CH₄N₂O₂
MW: 76.06 g/mol

In stock

Reference Standard

N-Hydroxylamine dapsone chemical structure

N-Hydroxylamine dapsone

CAS: 32695-27-5
Formula: C₁₂H₁₂N₂O₃S
MW: 264.3 g/mol

VQ-030043

Reference Standard

N-Hydroxymethyl Ropinirole chemical structure

N-Hydroxymethyl Ropinirole

CAS: 1027600-42-5
Formula: C₁₇H₂₆N₂O₂
MW: 290.4 g/mol

VQ-033643

Reference Standard

N-Isopropyl Carvedilol chemical structure

N-Isopropyl Carvedilol

CAS: 1246819-01-1
Formula: C₂₇H₃₂N₂O₄
MW: 448.6 g/mol

VQ-022041

Reference Standard

N-Isopropyl Tadalafil chemical structure

N-Isopropyl Tadalafil

CAS: 171596-30-8
Formula: C₂₄H₂₃N₃O₄
MW: 417.5 g/mol

VQ-042341

Reference Standard

N-Isopropyl-2-methyl-2-propyl-3-hydroxypropyl Carbamate chemical structure

N-Isopropyl-2-methyl-2-propyl-3-hydroxypropyl Carbamate

CAS: 25462-17-3
Formula: C₁₁H₂₃NO₃
MW: 217.31 g/mol

VQ-024811

Reference Standard

N-Isopropyl-N-Phenylnitrousamide chemical structure

N-Isopropyl-N-Phenylnitrousamide

CAS: 24642-83-9
Formula: C₉H₁₂N₂O
MW: 164.2 g/mol

VQ-032848

Reference Standard

N-Isopropyldopamine chemical structure

N-Isopropyldopamine

CAS: 3506-32-9
Formula: C₁₁H₁₇NO₂
MW: 195.26 g/mol

VQ-048711

Reference Standard

N-Lactosyl Hydrochlorothiazide Impurity

N-Lactosyl Hydrochlorothiazide Impurity

CAS: 289907-38-6
Formula: C₁₉H₂₈ClN₃O₁₄S₂
MW: 622.02 g/mol

In stock

Reference Standard

N-Methoxy-N,2-dimethyl-2-phenylpropanamide chemical structure

N-Methoxy-N,2-dimethyl-2-phenylpropanamide

CAS: 169280-16-4
Formula: C₁₂H₁₇NO₂
MW: 207.27 g/mol

VQ-047589

Reference Standard

N-Methyl Acamprosate chemical structure

N-Methyl Acamprosate

CAS: 741659-31-4
Formula: C₆H₁₂NO₄S-
MW: 194.23 g/mol

VQ-020710

Reference Standard

N-Methyl Adrenalone Hydrochloride chemical structure

N-Methyl Adrenalone Hydrochloride

CAS: 16899-83-5
Formula: C₁₀H₁₄ClNO₃
MW: 231.67 g/mol

VQ-029038

Reference Standard

N-Methyl Atomoxetine chemical structure

N-Methyl Atomoxetine

CAS: 83015-25-2
Formula: C₁₈H₂₃NO
MW: 269.4 g/mol

VQ-035824

Reference Standard

N-Methyl Carvedilol chemical structure

N-Methyl Carvedilol

CAS: 72956-35-5
Formula: C₂₅H₂₈N₂O₄
MW: 420.5 g/mol

VQ-029671

Reference Standard

N-Methyl Carvedilol Hydrochloride chemical structure

N-Methyl Carvedilol Hydrochloride

CAS: 1346599-33-4
Formula: C₂₅H₂₉ClN₂O₄
MW: 457 g/mol

VQ-036173

Reference Standard

N-Methyl Deoxygalactonojirimycin chemical structure

N-Methyl Deoxygalactonojirimycin

CAS: 141206-22-6
Formula: C₇H₁₅NO₄
MW: 177.2 g/mol

VQ-035329

Reference Standard

N-Methyl Duloxetine chemical structure

N-Methyl Duloxetine

CAS: 132335-46-7
Formula: C₁₉H₂₁NOS
MW: 311.4 g/mol

VQ-030336

Reference Standard

N-Methyl Esomeprazole Isomer-1 chemical structure

N-Methyl Esomeprazole Isomer-1

CAS: 1820041-19-7
Formula: C₁₈H₂₁N₃O₃S
MW: 359.4 g/mol

VQ-025616

Reference Standard

N-Methyl Etodolac chemical structure

N-Methyl Etodolac

CAS: 849630-94-0
Formula: C₁₈H₂₃NO₃
MW: 301.4 g/mol

VQ-030620

Reference Standard

N-Methyl Fluoxetine Hydrochloride chemical structure

N-Methyl Fluoxetine Hydrochloride

CAS: 885101-12-2
Formula: C₁₈H₂₁ClF₃NO
MW: 359.8 g/mol

VQ-022685

Reference Standard

N-Methyl Gatifloxacin-D3 chemical structure

N-Methyl Gatifloxacin-D3

CAS: 1216721-34-4
Formula: C₂₀H₂₄FN₃O₄
MW: 392.4 g/mol

VQ-048506

Reference Standard

N-Methyl Iminostilbene chemical structure

N-Methyl Iminostilbene

CAS: 52249-32-8
Formula: C₁₅H₁₃N
MW: 207.27 g/mol

VQ-031175

Reference Standard

N-Methyl Iso Desloratadine chemical structure

N-Methyl Iso Desloratadine

CAS: 183198-48-3
Formula: C₂₀H₂₁ClN₂
MW: 324.8 g/mol

VQ-036635

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