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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

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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

2,2'-((2R,2'R)-((4-(3-Oxomorpholino)phenyl)azanediyl)bis(2-hydroxypropane-3,1-diyl))bis(isoindoline-1,3-dione) chemical structure

2,2'-((2R,2'R)-((4-(3-Oxomorpholino)phenyl)azanediyl)bis(2-hydroxypropane-3,1-diyl))bis(isoindoline-1,3-dione)

CAS: 1643354-27-1
Formula: C₃₂H₃₀N₄O₈
MW: 598.6 g/mol

VQ-027858

Reference Standard

2,2'-((6-Chloro-2,4-dioxopyrimidine-1,3(2H,4H)-diyl)bis(methylene))dibenzonitrile chemical structure

2,2'-((6-Chloro-2,4-dioxopyrimidine-1,3(2H,4H)-diyl)bis(methylene))dibenzonitrile

CAS: 1618644-29-3
Formula: C₂₀H₁₃ClN₄O₂
MW: 376.8 g/mol

VQ-024205

Reference Standard

2,2'-(1-Phenyl-1H-1,2,4-triazole-3,5-diyl)diphenol

2,2'-(1-Phenyl-1H-1,2,4-triazole-3,5-diyl)diphenol

CAS: 86245-87-6
Formula: C₂₀H₁₅N₃O₂
MW: 329.35 g/mol

VQ-047979

Reference Standard

2,2'-(13-Oxo-1,4,7,10-tetraazabicyclo[8.2.1]tridecane-4,7-diyl)diacetic Acid chemical structure

2,2'-(13-Oxo-1,4,7,10-tetraazabicyclo[8.2.1]tridecane-4,7-diyl)diacetic Acid

CAS: 229312-33-8
Formula: C₁₃H₂₂N₄O₅
MW: 314.34 g/mol

VQ-030934

Reference Standard

2,2'-(2-Propyl-1H-imidazole-4,5-diyl)bis(propan-2-ol) chemical structure

2,2'-(2-Propyl-1H-imidazole-4,5-diyl)bis(propan-2-ol)

CAS: 2190488-06-1
Formula: C₁₂H₂₂N₂O₂
MW: 226.32 g/mol

VQ-038745

Reference Standard

2,2'-(3-Methylpyrazine-2,5-diyl)diethanol chemical structure

2,2'-(3-Methylpyrazine-2,5-diyl)diethanol

CAS: 96681-84-4
Formula: C₉H₁₄N₂O₂
MW: 182.22 g/mol

VQ-041569

Reference Standard

2,2'-(5-(di(1H-1,2,4-Triazol-1-yl)methyl)-1,3-phenylene)bis(2-methylpropanenitrile) chemical structure

2,2'-(5-(di(1H-1,2,4-Triazol-1-yl)methyl)-1,3-phenylene)bis(2-methylpropanenitrile)

CAS: 1186102-55-5
Formula: C₁₉H₂₀N₈
MW: 360.4 g/mol

VQ-035732

Reference Standard

2,2'-(Ethane-1,2-diylbis(azanediyl))dibutanoic Acid chemical structure

2,2'-(Ethane-1,2-diylbis(azanediyl))dibutanoic Acid

CAS: 498-17-9
Formula: C₁₀H₂₀N₂O₄
MW: 232.28 g/mol

VQ-030590

Reference Standard

2,2'-(Pentane-1,4-diyl)bis(isoindoline-1,3-dione) chemical structure

2,2'-(Pentane-1,4-diyl)bis(isoindoline-1,3-dione)

CAS: 81136-00-7
Formula: C₂₁H₁₈N₂O₄
MW: 362.4 g/mol

VQ-041667

Reference Standard

2,2'-(Piperazine-1,4-diyl)bis(N-(4-aminophenyl)-N-methylacetamide) chemical structure

2,2'-(Piperazine-1,4-diyl)bis(N-(4-aminophenyl)-N-methylacetamide)

CAS: 2410284-89-6
Formula: C₂₂H₃₀N₆O₂
MW: 410.5 g/mol

VQ-026917

Reference Standard

2,2'-(Propane-1,3-diyl)bis(1-methyl-1H-benzo[d]imidazol-5-amine) chemical structure

2,2'-(Propane-1,3-diyl)bis(1-methyl-1H-benzo[d]imidazol-5-amine)

CAS: 847588-86-7
Formula: C₁₉H₂₂N₆
MW: 334.4 g/mol

VQ-047545

Reference Standard

2,2'-(Pyridin-2-ylmethylene)diphenol chemical structure

2,2'-(Pyridin-2-ylmethylene)diphenol

CAS: 16985-07-2
Formula: C₁₈H₁₅NO₂
MW: 277.3 g/mol

VQ-033894

Reference Standard

2,2'-(Thiobis(2-hydroxy-5,1-phenylene))bis(4H-benzo[e][1,3]oxazin-4-one) chemical structure

2,2'-(Thiobis(2-hydroxy-5,1-phenylene))bis(4H-benzo[e][1,3]oxazin-4-one)

CAS: 1688656-86-1
Formula: C₂₈H₁₆N₂O₆S
MW: 508.5 g/mol

VQ-022321

Reference Standard

2,2'-Azobis(2,4-dimethylvaleronitrile) chemical structure

2,2'-Azobis(2,4-dimethylvaleronitrile)

CAS: 4419-11-8
Formula: C₁₄H₂₄N₄
MW: 248.37 g/mol

VQ-039265

Reference Standard

2,2'-Azobis[2-methyl-propanimidamide] Dihydrochloride chemical structure

2,2'-Azobis[2-methyl-propanimidamide] Dihydrochloride

CAS: 2997-92-4
Formula: C₈H₂₀Cl₂N₆
MW: 271.19 g/mol

VQ-029339

Reference Standard

2,2'-Bis(N-Methyl Naltrexone) Dibromide chemical structure

2,2'-Bis(N-Methyl Naltrexone) Dibromide

CAS: 1178907-31-7
Formula: C₄₂H₅₀Br₂N₂O₈
MW: 870.7 g/mol

VQ-049192

Reference Standard

2,2'-Dichloro-10-(3-(4-methylpiperazin-1-yl)propyl)-10H-3,10'-biphenothiazine chemical structure

2,2'-Dichloro-10-(3-(4-methylpiperazin-1-yl)propyl)-10H-3,10'-biphenothiazine

CAS: 1310578-36-9
Formula: C₃₂H₃₀Cl₂N₄S₂
MW: 605.6 g/mol

VQ-027634

Reference Standard

2,2'-Dinitrodibenzyl chemical structure

2,2'-Dinitrodibenzyl

CAS: 16968-19-7
Formula: C₁₄H₁₂N₂O₄
MW: 272.26 g/mol

VQ-021993

Reference Standard

2,2'-Dithiobis[N-methyl-benzamide] chemical structure

2,2'-Dithiobis[N-methyl-benzamide]

CAS: 2527-58-4
Formula: C₁₆H₁₆N₂O₂S₂
MW: 332.4 g/mol

VQ-029314

Reference Standard

2,2'-Sulfonylbis(nitrobenzene) chemical structure

2,2'-Sulfonylbis(nitrobenzene)

CAS: 14665-52-2
Formula: C₁₂H₈N₂O₆S
MW: 308.27 g/mol

VQ-036543

Reference Standard

2,2',2''-(1,4,7,10-Tetraazacyclododecane-1,4,7-triyl)triacetic Acid chemical structure

2,2',2''-(1,4,7,10-Tetraazacyclododecane-1,4,7-triyl)triacetic Acid

CAS: 114873-37-9
Formula: C₁₄H₂₆N₄O₆
MW: 346.38 g/mol

VQ-025954

Reference Standard

2,2′-Difluoro-3,3′-dimethoxy-1,1′-biphenyl chemical structure

2,2′-Difluoro-3,3′-dimethoxy-1,1′-biphenyl

CAS: 2316733-82-9
Formula: C₁₄H₁₂F₂O₂
MW: 250.24 g/mol

VQ-030415

Reference Standard

2,3 DiChloropropiophenone chemical structure

2,3 DiChloropropiophenone

CAS: 213382-05-9
Formula: C₉H₈Cl₂O
MW: 203.06 g/mol

VQ-032404

Reference Standard

2,3-(Methylenedioxy)benzaldehyde chemical structure

2,3-(Methylenedioxy)benzaldehyde

CAS: 7797-83-3
Formula: C₈H₆O₃
MW: 150.13 g/mol

VQ-032328

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