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Impurity Reference Standards

Pharmacopoeial impurities, nitrosamines, metabolites, labelled internal standards and API working standards, each backed by analytical data for method development and QC.

20,060 products6 categories2,050 in stockCOA + SDS with every lot

20,060 products · page 15 of 836

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(2R)-1-(2,5-Difluorophenyl)-2-((tetrahydro-2H-pyran-2-yl)oxy)propan-1-one

CAS: 241479-69-6
Formula: C₁₄H₁₆F₂O₃
MW: 270.27 g/mol

ZX-029988

(2R)-1-(Chloroacetyl)-2-pyrrolidinecarbonitrile

CAS: 565452-98-4
Formula: C₇H₉ClN₂O
MW: 172.61 g/mol

ZX-022384

(2R)-2-[(1R)-1-[3,5-Bis(trifluoromethyl)phenyl]ethoxy]-4-(phenylmethyl)-3-morpholinone

CAS: 287930-75-0
Formula: C₂₁H₁₉F₆NO₃
MW: 447.4 g/mol

ZX-023352

(2R)-2-Amino-2-(4-hydroxyphenyl) Acetamide

CAS: 54397-23-8
Formula: C₈H₁₀N₂O₂
MW: 166.18 g/mol

ZX-023278

(2R)-3-Acetylthio-2-methylpropionyl Chloride

CAS: 74345-73-6
Formula: C₆H₉ClO₂S
MW: 180.65 g/mol

ZX-032869

(2R)-6-Hydroxy-2-(hydroxymethyl)-2H-pyran-5-one

CAS: 252006-38-5
Formula: C₆H₈O₄
MW: 144.12 g/mol

ZX-035084

(2RS)-2-[(4-chlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethanamine nitrate

CAS: 2724510-72-7
Formula: C₁₅H₁₅Cl₃N₂O₄
MW: 393.6 g/mol

ZX-029141

(2S-Trans)-Diltiazem Hydrochloride

CAS: 103532-26-9
Formula: C₂₂H₂₇ClN₂O₄S
MW: 451 g/mol

ZX-036671

(2S, 2'S)-6-Fluoro-2-(2′-oxiranyl)chromane

CAS: 129050-23-3
Formula: C₁₁H₁₁FO₂
MW: 194.2 g/mol

ZX-025774

(2S,2'R)-6-Fluoro-2-(2'-oxiranyl)chromane

CAS: 197706-51-7
Formula: C₁₁H₁₁FO₂
MW: 194.2 g/mol

ZX-032872

(2S,2'S)-1,1'-[[(3-Hydroxytricyclo[3.3.1.13,7]dec-1-yl)imino]bis(1-oxo-2,1-ethanediyl)]bis-2-pyrrolidinecarbonitrile

CAS: 1036959-23-5
Formula: C₂₄H₃₃N₅O₃
MW: 439.6 g/mol

ZX-023025

(2S,2R',Trans)-Saxagliptin

CAS: 1564265-98-0
Formula: C₁₈H₂₅N₃O₂
MW: 315.4 g/mol

ZX-032409

(2S,2S',Trans)-Saxagliptin

CAS: 1564265-96-8
Formula: C₁₈H₂₅N₃O₂
MW: 315.4 g/mol

ZX-032406

(2S,3R,4R,5R)-2-(4-Aminopyrrolo[2,1-f][1,2,4]triazin-7-yl)-3,4-bis(benzyloxy)-5-((benzyloxy)methyl)tetrahydrofuran-2-carbonitrile

CAS: 1369903-46-7
Formula: C₃₃H₃₁N₅O₄
MW: 561.6 g/mol

ZX-032146

(2S,3R,4R,5S,6R)-2-(3-((5-(4-Fluorophenyl)thiophen-2-yl)(hydroperoxy)methyl)-4-methylphenyl)-6-(hydroxymethyl)-tetrahydro-2H-pyran-3,4,5-triol

CAS: 2247196-28-5
Formula: C₂₄H₂₅FO₇S
MW: 476.5 g/mol

ZX-020111

(2S,3R,4R,5S) Suzetrigine Diastereomer

CAS: 2649467-57-0
Formula: C₂₁H₂₀F₅N₃O₄
MW: 473.4 g/mol

ZX-022835

(2S,3R,4R,5S)-3-(3,4-Difluoro-2-methoxyphenyl)-4,5-dimethyl-5-(trifluoromethyl)tetrahydrofuran-2-carboxylic Acid

CAS: 3030223-34-5
Formula: C₁₅H₁₅F₅O₄
MW: 354.27 g/mol

ZX-027057

(2S,3R,6R)-6-Ethyl-3-methyl-2-(3-oxobutyl)-cyclohexanone

CAS: 958447-27-3
Formula: C₁₃H₂₂O₂
MW: 210.31 g/mol

ZX-023366

(2S,3R,6RS)-2-(3-Oxobutyl)-3-methyl-6-[(R)-2-propanal]cyclohexanone Mixture of Diastereomers

CAS: 1093625-96-7
Formula: C₁₄H₂₂O₃
MW: 238.32 g/mol

ZX-019891

(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol

CAS: 38345-66-3
Formula: C₁₉H₂₅NO
MW: 283.4 g/mol

ZX-047822

(2S,3R)-2-(2,4-Difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)-2,3-butanediol

CAS: 135272-36-5
Formula: C₁₂H₁₃F₂N₃O₂
MW: 269.25 g/mol

ZX-024455

(2S,3R)-2-(2,4-Difluorophenyl)-3-methyl-2-[(1H-1,2,4-triazol-1-yl)methyl]oxirane

CAS: 135270-07-4
Formula: C₁₂H₁₁F₂N₃O
MW: 251.23 g/mol

ZX-021524

(2S,3R)-3-(2,5-Difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanenitrile

CAS: 241479-74-3
Formula: C₁₃H₁₂F₂N₄O
MW: 278.26 g/mol

ZX-025168

(2S,3R)-3-(2,5-Difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanethioamide

CAS: 2170932-49-5
Formula: C₁₃H₁₄F₂N₄OS
MW: 312.34 g/mol

ZX-024462

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