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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 13 of 836

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(2R,3R,4R,5R)-2-(4-Amino-2-oxo-1,3,5-triazin-1(2H)-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diyl diacetate

CAS: 1415316-72-1
Formula: C₁₂H₁₆N₄O₇
MW: 328.28 g/mol

ZX-028164

(2R,3R,4R,5R)-5-(4-Benzamido-2-oxopyrimidin-1(2H)-yl)-2-((benzoyloxy)methyl)-4-fluoro-4-methyltetrahydrofuran-3-yl Benzoate

CAS: 817204-32-3
Formula: C₃₁H₂₆FN₃O₇
MW: 571.6 g/mol

ZX-022801

(2R,3R,4R,5R)-5-Methyltetrahydrofuran-2,3,4-triyl triacetate

CAS: 76497-54-6
Formula: C₁₁H₁₆O₇
MW: 260.24 g/mol

ZX-021014

(2R,3R,4R,5S,6S)-2-(Acetoxymethyl)-6-(3-(benzo[b]thiophen-2-ylmethyl)-4-fluorophenyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate

CAS: 1034305-21-9
Formula: C₂₉H₂₉FO₉S
MW: 572.6 g/mol

ZX-025148

(2R,3R,4S,5R)-2-(6-Amino-2-methoxy-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol

CAS: 24723-77-1
Formula: C₁₁H₁₅N₅O₅
MW: 297.27 g/mol

ZX-023154

(2R,3R,6S)-6-(4-Fluorophenyl)tetrahydro-2-(4-hydroxyphenyl)-2H-pyran-3-carboxylic Acid

CAS: 1618657-31-0
Formula: C₁₈H₁₇FO₄
MW: 316.3 g/mol

ZX-024667

(2R,3R)-2-(2-Fluoro-4-(4-methylenepiperidin-1-yl)phenyl)-3-(4-methylenepiperidin-1-yl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol

CAS: 2055912-03-1
Formula: C₂₄H₃₂FN₅O
MW: 425.5 g/mol

ZX-029184

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

CAS: 135133-23-2
Formula: C₁₇H₂₁F₂N₃O₃
MW: 353.36 g/mol

ZX-029186

(2R,3R)-2-(2,4-Difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)butane-2,3-diol

CAS: 133775-25-4
Formula: C₁₂H₁₃F₂N₃O₂
MW: 269.25 g/mol

ZX-024461

(2R,3R)-2-(2,4-Difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)butane-2,3-diol Mesylate

CAS: 1175536-50-1
Formula: C₁₃H₁₇F₂N₃O₅S
MW: 365.36 g/mol

ZX-024459

(2R,3R)-2-(2,4-Difluorophenyl)-1-(4H-1,2,4-triazol-4-yl)butane-2,3-diol

CAS: 2122222-14-2
Formula: C₁₂H₁₃F₂N₃O₂
MW: 269.25 g/mol

ZX-029187

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

CAS: 135270-13-2
Formula: C₁₂H₁₁F₂N₃O
MW: 251.23 g/mol

ZX-024454

(2R,3R)-2-Amino-3-(3,4-dihydroxyphenyl)-3-hydroxypropanoic acid

CAS: 51829-98-2
Formula: C₉H₁₁NO₅
MW: 213.19 g/mol

ZX-029119

(2R,3R)-3-(2,4-Difluorophenyl)-3-hydroxy-4-(1H-1,2,4-triazol-1-yl)butan-2-yl methanesulfonate

CAS: 133775-26-5
Formula: C₁₃H₁₅F₂N₃O₄S
MW: 347.34 g/mol

ZX-029188

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

CAS: 2001052-01-1
Formula: C₁₃H₁₂F₂N₄O
MW: 278.26 g/mol

ZX-025174

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

CAS: 368421-58-3
Formula: C₁₃H₁₄F₂N₄OS
MW: 312.34 g/mol

ZX-025172

(2R,3R)-4-((4-Chlorophenyl)amino)-2,3-dihydroxy-4-oxobutanoic acid

CAS: 17447-35-7
Formula: C₁₀H₁₀ClNO₅
MW: 259.64 g/mol

ZX-039262

(2R,3S,4R,5R,6S)-2-(Hydroxymethyl)-6-(3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)tetrahydro-2H-pyran-3,4,5-triol

CAS: 2452301-27-6
Formula: C₂₃H₂₈O₇
MW: 416.5 g/mol

ZX-021537

(2R,3S,4R,5S)-1-Benzhydryl-3,4,5-tris(benzyloxy)-2-((benzyloxy)methyl)piperidine

CAS: 2265925-04-8
Formula: C₄₇H₄₇NO₄
MW: 689.9 g/mol

ZX-025621

(2R,3S,4R,5S)-2-(5,6-Dichloro-2-(isopropylamino)-1H-benzo[d]imidazol-1-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol

CAS: 176161-49-2
Formula: C₁₅H₁₉Cl₂N₃O₄
MW: 376.2 g/mol

ZX-030448

(2R,3S,5R)-5-(6-Amino-2-chloro-7H-purin-7-yl)-2-(hydroxymethyl)tetrahydrofuran-3-ol

CAS: 172792-37-9
Formula: C₁₀H₁₂ClN₅O₃
MW: 285.69 g/mol

ZX-028646

(2R,3S,5S)-5-Acetoxy-2-(((4-Chlorobenzoyl)oxy)methyl)tetrahydrofuran-3-yl 4-chlorobenzoate

CAS: 1019659-87-0
Formula: C₂₁H₁₈Cl₂O₇
MW: 453.3 g/mol

ZX-033278

(2R,3S)-2-((R)-1-(3,5-Bis(trifluoromethyl)phenyl)ethoxy)-3-(4-fluorophenyl)morpholine hydrochloride

CAS: 171482-05-6
Formula: C₂₀H₁₉ClF₇NO₂
MW: 473.8 g/mol

ZX-023345

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

CAS: 135270-11-0
Formula: C₁₂H₁₃F₂N₃O₂
MW: 269.25 g/mol

ZX-021526

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