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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

(S)-N-(2-(7,8-Dihydro-6H-indeno[5,4-b]furan-8-yl)ethyl)propionamide chemical structure

(S)-N-(2-(7,8-Dihydro-6H-indeno[5,4-b]furan-8-yl)ethyl)propionamide

CAS: 880152-62-5
Formula: C₁₆H₁₉NO₂
MW: 257.33 g/mol

VQ-027739

Reference Standard

(S)-N-(3-((3-Fluoro-4-morpholinophenyl)amino)-2-hydroxypropyl)acetamide chemical structure

(S)-N-(3-((3-Fluoro-4-morpholinophenyl)amino)-2-hydroxypropyl)acetamide

CAS: 1561176-27-9
Formula: C₁₅H₂₂FN₃O₃
MW: 311.35 g/mol

VQ-031587

Reference Standard

(S)-N-(3-Chloro-4-fluorophenyl)-6-nitro-7-(tetrahydrofuran-3-yloxy)quinazolin-4-amine chemical structure

(S)-N-(3-Chloro-4-fluorophenyl)-6-nitro-7-(tetrahydrofuran-3-yloxy)quinazolin-4-amine

CAS: 314771-88-5
Formula: C₁₈H₁₄ClFN₄O₄
MW: 404.8 g/mol

VQ-020751

Reference Standard

(S)-N-(4-((3-Chloro-4-fluorophenyl)amino)-7-(((R)-tetrahydrofuran-3-yl)oxy)quinazolin-6-yl)-4-(dimethylamino)-3-hydroxybutanamide

(S)-N-(4-((3-Chloro-4-fluorophenyl)amino)-7-(((R)-tetrahydrofuran-3-yl)oxy)quinazolin-6-yl)-4-(dimethylamino)-3-hydroxybutanamide

CAS: 2413212-21-0
Formula: C₂₄H₂₇ClFN₅O₄
MW: 503.95 g/mol

VQ-024154

Reference Standard

(S)-N-(4-((3-Chloro-4-fluorophenyl)amino)-7-((tetrahydrofuran-3-yl)oxy)quinazolin-6-yl)but-3-enamide

(S)-N-(4-((3-Chloro-4-fluorophenyl)amino)-7-((tetrahydrofuran-3-yl)oxy)quinazolin-6-yl)but-3-enamide

CAS: 2413212-17-4
Formula: C₂₂H₂₀ClFN₄O₃
MW: 442.87 g/mol

VQ-020746

Reference Standard

(S)-N-(4-((3-Chloro-4-fluorophenyl)amino)-7-((tetrahydrofuran-3-yl)oxy)quinazolin-6-yl)formamide chemical structure

(S)-N-(4-((3-Chloro-4-fluorophenyl)amino)-7-((tetrahydrofuran-3-yl)oxy)quinazolin-6-yl)formamide

CAS: 2223677-60-7
Formula: C₁₉H₁₆ClFN₄O₃
MW: 402.8 g/mol

VQ-020752

Reference Standard

(S)-N-(4-Chloro-2-(4-cyclopropyl-1,1,1-trifluoro-2-hydroxybut-3-yn-2-yl)phenyl)-4-methoxybenzamide chemical structure

(S)-N-(4-Chloro-2-(4-cyclopropyl-1,1,1-trifluoro-2-hydroxybut-3-yn-2-yl)phenyl)-4-methoxybenzamide

CAS: 353270-77-6
Formula: C₂₁H₁₇ClF₃NO₃
MW: 423.8 g/mol

VQ-030390

Reference Standard

(S)-N-(5-Chloropyrazolo[1,5-a]pyrimidin-3-yl)-3-hydroxypyrrolidine-1-carboxamide chemical structure

(S)-N-(5-Chloropyrazolo[1,5-a]pyrimidin-3-yl)-3-hydroxypyrrolidine-1-carboxamide

CAS: 2226370-52-9
Formula: C₁₁H₁₂ClN₅O₂
MW: 281.7 g/mol

VQ-026372

Reference Standard

(S)-N-[[3-(3-Fluoro-4-(4-morpholinyl)phenyl)-2-oxo-5-oxazolidinyl]methyl]benzylamine hydrochloride chemical structure

(S)-N-[[3-(3-Fluoro-4-(4-morpholinyl)phenyl)-2-oxo-5-oxazolidinyl]methyl]benzylamine hydrochloride

CAS: 1236077-63-6
Formula: C₂₁H₂₅ClFN₃O₃
MW: 421.9 g/mol

VQ-038070

Reference Standard

(S)-N-[1-(3-Hydroxy-3-methylbutanamido)-1-oxo-3-phenylpropan-2-yl]pyrazine-2-carboxamide chemical structure

(S)-N-[1-(3-Hydroxy-3-methylbutanamido)-1-oxo-3-phenylpropan-2-yl]pyrazine-2-carboxamide

CAS: 2379402-85-2
Formula: C₁₉H₂₂N₄O₄
MW: 370.4 g/mol

VQ-024616

Reference Standard

(S)-N-[4-[3-[(1,1-Dimethylethyl)amino]-2-hydroxypropoxy]-1,2,5-thiadiazol-3-yl]-N-(2-hydroxyethyl)-glycine chemical structure

(S)-N-[4-[3-[(1,1-Dimethylethyl)amino]-2-hydroxypropoxy]-1,2,5-thiadiazol-3-yl]-N-(2-hydroxyethyl)-glycine

CAS: 75014-25-4
Formula: C₁₃H₂₄N₄O₅S
MW: 348.42 g/mol

VQ-042555

Reference Standard

(S)-N-Boc-3-hydroxyadamantylglycine-L-cis-4,5-methanoprolinamide chemical structure

(S)-N-Boc-3-hydroxyadamantylglycine-L-cis-4,5-methanoprolinamide

CAS: 361442-01-5
Formula: C₂₃H₃₅N₃O₅
MW: 433.5 g/mol

VQ-033778

Reference Standard

(S)-N-Nitroso Anabasine chemical structure

(S)-N-Nitroso Anabasine

CAS: 1133-64-8
Formula: C₁₀H₁₃N₃O
MW: 191.23 g/mol

VQ-049234

Reference Standard

(S)-N-Nitroso Anatabine chemical structure

(S)-N-Nitroso Anatabine

CAS: 71267-22-6
Formula: C₁₀H₁₁N₃O
MW: 189.21 g/mol

VQ-049232

Reference Standard

(S)-N2,N2,6-Trimethyl-1,6-dihydro-1,3,5-triazine-2,4-diamine Hydrochloride (1:x)

(S)-N2,N2,6-Trimethyl-1,6-dihydro-1,3,5-triazine-2,4-diamine Hydrochloride (1:x)

CAS: 775351-62-7
Formula: C₆H₁₃N₅ ⁺ (HCl)x

VQ-037674

Reference Standard

(S)-N4-(3-Chloro-4-fluorophenyl)-7-((tetrahydrofuran-3-yl)oxy) quinazoline-4,6-diamine chemical structure

(S)-N4-(3-Chloro-4-fluorophenyl)-7-((tetrahydrofuran-3-yl)oxy) quinazoline-4,6-diamine

CAS: 314771-76-1
Formula: C₁₈H₁₆ClFN₄O₂
MW: 374.8 g/mol

VQ-020748

Reference Standard

(S)-N4-(3-chlorophenyl)-7-((tetrahydrofuran-3-yl)oxy)quinazoline-4,6-diamine chemical structure

(S)-N4-(3-chlorophenyl)-7-((tetrahydrofuran-3-yl)oxy)quinazoline-4,6-diamine

CAS: 2413212-09-4
Formula: C₁₈H₁₇ClN₄O₂
MW: 356.8 g/mol

VQ-021445

Reference Standard

(S)-N4-(3,4-Difluorophenyl)-7-((tetrahydrofuran-3-yl)oxy)quinazoline-4,6-diamine chemical structure

(S)-N4-(3,4-Difluorophenyl)-7-((tetrahydrofuran-3-yl)oxy)quinazoline-4,6-diamine

CAS: 2044709-72-8
Formula: C₁₈H₁₆F₂N₄O₂
MW: 358.3 g/mol

VQ-028905

Reference Standard

(S)-N4-(4-Fluorophenyl)-7-((tetrahydrofuran-3-yl)oxy)quinazoline-4,6-diamine chemical structure

(S)-N4-(4-Fluorophenyl)-7-((tetrahydrofuran-3-yl)oxy)quinazoline-4,6-diamine

CAS: 2413212-07-2
Formula: C₁₈H₁₇FN₄O₂
MW: 340.4 g/mol

VQ-028797

Reference Standard

(S)-N4-phenyl-7-((tetrahydrofuran-3-yl)oxy)quinazoline-4,6-diamine

(S)-N4-phenyl-7-((tetrahydrofuran-3-yl)oxy)quinazoline-4,6-diamine

CAS: 2413212-08-3
Formula: C₁₈H₁₈N₄O₂
MW: 322.36 g/mol

VQ-034773

Reference Standard

(S)-N6,N6-dipropyl-4,5,6,7-tetrahydrobenzo[d]thiazole-2,6-diamine chemical structure

(S)-N6,N6-dipropyl-4,5,6,7-tetrahydrobenzo[d]thiazole-2,6-diamine

CAS: 1147937-31-2
Formula: C₈H₁₀N₄O₃S
MW: 242.26 g/mol

VQ-027566

Reference Standard

(S)-Naproxen Acyl-beta-D-glucuronide chemical structure

(S)-Naproxen Acyl-beta-D-glucuronide

CAS: 41945-43-1
Formula: C₂₀H₂₂O₉
MW: 406.4 g/mol

VQ-032067

Reference Standard

(S)-Naproxen-d3 chemical structure

(S)-Naproxen-d3

CAS: 1094102-82-5
Formula: C₁₄H₁₄O₃
MW: 233.28 g/mol

VQ-043428

Reference Standard

(S)-Noradrenaline chemical structure

(S)-Noradrenaline

CAS: 149-95-1
Formula: C₈H₁₁NO₃
MW: 169.18 g/mol

VQ-038683

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