Impurity Reference Standards

Metabolites & Degradation Products

Drug metabolites, N-oxides, sulphoxides and forced-degradation products for stability studies, DMPK work and impurity identification.

2,569 products117 in stockCOA + SDS with every lot

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Fesoterodinyl (4-Hydroxy-tolterodine phenoxy) Ether

CAS: 1380491-71-3
Formula: C₄₈H₆₆N₂O₄
MW: 735 g/mol

ZX-024728

Fexofenadine N-Oxide

CAS: 1422515-52-3
Formula: C₃₂H₃₉NO₅
MW: 517.7 g/mol

ZX-006285

Fexofenadine Tertiary dehydrated Impurity

CAS: 1347311-10-7
Formula: C₃₂H₃₉NO₃
MW: 485.7 g/mol

ZX-029488

Fidaxomicin metabolite OP-1118

CAS: 1030825-28-5
Formula: C₄₈H₆₈Cl₂O₁₇
MW: 987.9 g/mol

ZX-029495

Finerenone 4-nitropyridine N-oxide

CAS: 60323-96-8
Formula: C₆H₅ClN₂O₃
MW: 188.57 g/mol

ZX-029513

Finerenone Pyridine N-oxide Impurity

CAS: 20173-49-3
Formula: C₆H₆ClNO
MW: 143.57 g/mol

ZX-033466

Fingolimod Monoester Impurity A

CAS: 882691-14-7
Formula: C₂₁H₃₅NO₃
MW: 349.5 g/mol

ZX-029517

Fipronil Desulfinyl

CAS: 205650-65-3
Formula: C₁₂H₄Cl₂F₆N₄
MW: 389.08 g/mol

ZX-046840

Fluconazole N-Oxide

CAS: 1997296-62-4
Formula: C₁₃H₁₂F₂N₆O₂
MW: 322.27 g/mol

ZX-021693

Fludarabine Phosphate Impurity B

CAS: 149297-79-0
Formula: C₅H₅N₅O
MW: 151.13 g/mol

ZX-039181

Flumethasone Impurity 6

CAS: 1355648-15-5
Formula: C₂₂H₂₈ClFO₅
MW: 426.9 g/mol

ZX-024783

Flunarizine N-Oxide Dihydrochloride

CAS: 123375-94-0
Formula: C₂₆H₂₆F₂N₂O
MW: 420.5 g/mol

ZX-029556

Fluometuron-desmethyl

CAS: 3032-40-4
Formula: C₉H₉F₃N₂O
MW: 218.18 g/mol

ZX-047165

Fluorometholone 21 hydroxy analogue

CAS: 382-52-5
Formula: C₂₂H₂₉FO₅
MW: 392.5 g/mol

ZX-024800

Fluorometholone Des Acetyl 17-Keto Impurity

CAS: 3868-89-1
Formula: C₁₉H₂₃FO₃
MW: 318.4 g/mol

ZX-024802

Fluphenazine Decanoate Di-N-Oxide

CAS: 76005-65-7
Formula: C₃₂H₄₄F₃N₃O₄S
MW: 623.8 g/mol

ZX-029581

Fluphenazine decanoate N-1-oxide

CAS: 76013-31-5
Formula: C₃₂H₄₄F₃N₃O₃S
MW: 607.8 g/mol

ZX-024816

Fluphenazine Decanoate N-Oxide

CAS: 76005-64-6
Formula: C₃₂H₄₄F₃N₃O₃S
MW: 607.8 g/mol

ZX-029577

Fluphenazine Decanoate s-Oxide

CAS: 64610-50-0
Formula: C₃₂H₄₄F₃N₃O₃S
MW: 607.8 g/mol

ZX-029582

Fluphenazine Di N-Oxide

CAS: 76005-60-2
Formula: C₂₂H₂₆F₃N₃O₃S
MW: 469.5 g/mol

ZX-006286

Fluphenazine Mono N-Oxide

CAS: 30897-25-7
Formula: C₂₂H₂₆F₃N₃O₂S
MW: 453.5 g/mol

ZX-006287

Fluprednidene Acetate Dermene Impurity

CAS: 1526-69-8
Formula: C₂₄H₂₉FO₅
MW: 416.5 g/mol

ZX-021719

Fluticasone Impurity 4

CAS: 105638-31-1
Formula: C₁₃H₁₈O₃
MW: 222.28 g/mol

ZX-021728

Fluticasone Propionate impurity 1

CAS: 59860-80-9
Formula: C₂₅H₃₂F₂O₆
MW: 466.5 g/mol

ZX-024836

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