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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-(2-Ethylphenyl)-2-methyl-3-(piperidin-1-yl)propan-1-one Hydrochloride

1-(2-Ethylphenyl)-2-methyl-3-(piperidin-1-yl)propan-1-one Hydrochloride

CAS: 2608845-70-9
Formula: C₁₇H₂₆ClNO
MW: 295.85 g/mol

VQ-025556

Reference Standard

1-(2-Fluoro-6-(trifluoromethyl)benzyl)-6-methylpyrimidine-2,4(1H,3H)-dione chemical structure

1-(2-Fluoro-6-(trifluoromethyl)benzyl)-6-methylpyrimidine-2,4(1H,3H)-dione

CAS: 830346-47-9
Formula: C₁₃H₁₀F₄N₂O₂
MW: 302.22 g/mol

VQ-030414

Reference Standard

1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridine-3-carbonitrile chemical structure

1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridine-3-carbonitrile

CAS: 256376-65-5
Formula: C₁₄H₉FN₄
MW: 252.25 g/mol

VQ-033556

Reference Standard

1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridine-3-carboxamide chemical structure

1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridine-3-carboxamide

CAS: 256376-62-2
Formula: C₁₄H₁₁FN₄O
MW: 270.26 g/mol

VQ-033555

Reference Standard

1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridine-3-carboximidamide Hydrochloride chemical structure

1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridine-3-carboximidamide Hydrochloride

CAS: 256499-19-1
Formula: C₁₄H₁₃ClFN₅
MW: 305.74 g/mol

VQ-041921

Reference Standard

1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridine-3-carboxylic Acid Ethyl Ester chemical structure

1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridine-3-carboxylic Acid Ethyl Ester

CAS: 256376-59-7
Formula: C₁₆H₁₄FN₃O₂
MW: 299.3 g/mol

VQ-033560

Reference Standard

1-(2-Hydroxyacetyl)pyrrolidine-2-carbonitrile

1-(2-Hydroxyacetyl)pyrrolidine-2-carbonitrile

CAS: 1823597-32-5
Formula: C₇H₁₀N₂O₂
MW: 154.17 g/mol

VQ-042898

Reference Standard

1-(2-Hydroxyethyl)-2,2,6,6-tetramethylpiperidin-4-ol chemical structure

1-(2-Hydroxyethyl)-2,2,6,6-tetramethylpiperidin-4-ol

CAS: 52722-86-8
Formula: C₁₁H₂₃NO₂
MW: 201.31 g/mol

VQ-039721

Reference Standard

1-(2-Hydroxyphenyl)-3-phenylhexane-1,5-dione chemical structure

1-(2-Hydroxyphenyl)-3-phenylhexane-1,5-dione

CAS: 2514748-07-1
Formula: C₁₈H₁₈O₃
MW: 282.3 g/mol

VQ-042962

Reference Standard

1-(2-Isopropylthiazol-4-Yl)-N-((2-Isopropylthiazol-4-Yl)Methyl)-N-Methylmethanamine chemical structure

1-(2-Isopropylthiazol-4-Yl)-N-((2-Isopropylthiazol-4-Yl)Methyl)-N-Methylmethanamine

CAS: 2470440-54-9
Formula: C₁₅H₂₃N₃S₂
MW: 309.5 g/mol

VQ-033587

Reference Standard

1-(2-Isopropylthiazol-4-yl)-N-methylmethanamine chemical structure

1-(2-Isopropylthiazol-4-yl)-N-methylmethanamine

CAS: 154212-60-9
Formula: C₈H₁₄N₂S
MW: 170.28 g/mol

VQ-035809

Reference Standard

1-(2-Methoxyphenyl)-4-nitrosopiperazine chemical structure

1-(2-Methoxyphenyl)-4-nitrosopiperazine

CAS: 2219339-64-5
Formula: C₁₁H₁₅N₃O₂
MW: 221.26 g/mol

VQ-034501

Reference Standard

1-(2-Methoxyphenyl)piperazine (HCl Salt) chemical structure

1-(2-Methoxyphenyl)piperazine (HCl Salt)

CAS: 5464-78-8
Formula: C₁₁H₁₇ClN₂O
MW: 228.72 g/mol

VQ-028593

Reference Standard

1-(2-Methyl-1-(neopentylamino)propan-2-yl)-1H-imidazol-4-amine chemical structure

1-(2-Methyl-1-(neopentylamino)propan-2-yl)-1H-imidazol-4-amine

CAS: 865774-26-1
Formula: C₁₂H₂₄N₄
MW: 224.35 g/mol

VQ-045233

Reference Standard

1-(2-Methyl-3-nitrophenyl)guanidine chemical structure

1-(2-Methyl-3-nitrophenyl)guanidine

CAS: 870459-88-4
Formula: C₈H₁₀N₄O₂
MW: 194.19 g/mol

VQ-048655

Reference Standard

1-(2-Methyl-4-nitro-1H-imidazol-1-yl)propan-2-ol chemical structure

1-(2-Methyl-4-nitro-1H-imidazol-1-yl)propan-2-ol

CAS: 39893-64-6
Formula: C₇H₁₁N₃O₃
MW: 185.18 g/mol

VQ-042120

Reference Standard

1-(2-Methylpropyl)-1H-imidazo[4,5-c]quinoline chemical structure

1-(2-Methylpropyl)-1H-imidazo[4,5-c]quinoline

CAS: 99010-24-9
Formula: C₁₄H₁₅N₃
MW: 225.29 g/mol

VQ-026153

Reference Standard

1-(2-Propen-1-yl)-2-pyrrolidinemethanamine chemical structure

1-(2-Propen-1-yl)-2-pyrrolidinemethanamine

CAS: 26116-13-2
Formula: C₈H₁₆N₂
MW: 140.23 g/mol

VQ-035659

Reference Standard

1-(2-Pyrimidyl)piperazine Dihydrochloride chemical structure

1-(2-Pyrimidyl)piperazine Dihydrochloride

CAS: 94021-22-4
Formula: C₈H₁₄Cl₂N₄
MW: 237.13 g/mol

VQ-043855

Reference Standard

1-(2,2-Difluoro-benzo[1,3]dioxol-5-yl)-cyclopropanecarboxylic acid chemical structure

1-(2,2-Difluoro-benzo[1,3]dioxol-5-yl)-cyclopropanecarboxylic acid

CAS: 862574-88-7
Formula: C₁₁H₈F₂O₄
MW: 242.17 g/mol

VQ-040041

Reference Standard

1-(2,2-Dimethoxyethyl)-3-methoxy-4-oxo-1,4-dihydropyridine-2,5-dicarboxylic Acid chemical structure

1-(2,2-Dimethoxyethyl)-3-methoxy-4-oxo-1,4-dihydropyridine-2,5-dicarboxylic Acid

CAS: 2651309-06-5
Formula: C₁₂H₁₅NO₈
MW: 301.25 g/mol

VQ-030261

Reference Standard

1-(2,2-Dimethoxyethyl)-5-methoxy-6-(methoxycarbonyl)-4-oxo-1,4-dihydropyridine-3-carboxylic Acid chemical structure

1-(2,2-Dimethoxyethyl)-5-methoxy-6-(methoxycarbonyl)-4-oxo-1,4-dihydropyridine-3-carboxylic Acid

CAS: 1335210-23-5
Formula: C₁₃H₁₇NO₈
MW: 315.28 g/mol

VQ-025361

Reference Standard

1-(2,3-Dichloropropoxy)naphthalene chemical structure

1-(2,3-Dichloropropoxy)naphthalene

CAS: 2267999-96-0
Formula: C₁₃H₁₂Cl₂O
MW: 255.14 g/mol

VQ-033377

Reference Standard

1-(2,3-Dihydro-[2,4'-bibenzo[b]thiophen]-4-yl)piperazine chemical structure

1-(2,3-Dihydro-[2,4'-bibenzo[b]thiophen]-4-yl)piperazine

CAS: 1420987-85-4
Formula: C₂₀H₂₀N₂S₂
MW: 352.5 g/mol

VQ-024637

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