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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Sofosbuvir impurity I

CAS: 2164516-85-0
Formula: C₂₁H₂₇FN₃O₉P
MW: 515.4 g/mol

ZX-022799

Sofosbuvir Impurity SF2

CAS: 1394157-34-6
Formula: C₂₀H₂₅FN₃O₉P
MW: 501.4 g/mol

ZX-026974

Sofosbuvir metabolite GS-566500

CAS: 1233335-78-8
Formula: C₁₃H₁₉FN₃O₉P
MW: 411.28 g/mol

ZX-026971

Sofosbuvir Nucleoside Derivative

CAS: 863329-66-2
Formula: C₁₀H₁₃FN₂O₅
MW: 260.22 g/mol

ZX-022790

Sofosbuvir O-Desisopropyl O-Ethyl Ester

CAS: 1064684-30-5
Formula: C₂₁H₂₇FN₃O₉P
MW: 515.4 g/mol

ZX-032525

Sorafenib Hydroxydemethylamine

CAS: 1012058-78-4
Formula: C₂₀H₁₃ClF₃N₃O₄
MW: 451.8 g/mol

ZX-026992

Sorafenib N-Oxide

CAS: 583840-03-3
Formula: C₂₁H₁₆ClF₃N₄O₄
MW: 480.8 g/mol

ZX-006347

Spirotetramat Metabolite cis-enol

CAS: 203312-38-3
Formula: C₁₈H₂₃NO₃
MW: 301.4 g/mol

ZX-043423

Spirotetramat-keto-hydroxy

CAS: 1172134-11-0
Formula: C₁₈H₂₃NO₄
MW: 317.4 g/mol

ZX-040534

SRR uncyclized ezetimibe impurity

CAS: 1621715-63-6
Formula: C₃₃H₃₀F₂N₂O₅
MW: 572.6 g/mol

ZX-024668

Sugammadex Diastereomer 1 Sulfoxide

CAS: 2412953-11-6
Formula: C₇₂H₁₁₂O₄₉S₈
MW: 2018.2 g/mol

ZX-006348

Sugammadex Diastereomer 2 Sulfoxide

CAS: 2412953-12-7
Formula: C₇₂H₁₁₂O₄₉S₈
MW: 2018.2 g/mol

ZX-006349

Sugammadex Monohydroxy Impurity

CAS: 2376607-98-4
Formula: C₆₉H₁₀₈O₄₇S₇
MW: 1914 g/mol

ZX-027031

Sunitinib Impurity B

CAS: 356068-99-0
Formula: C₂₂H₂₇FN₄O₃
MW: 414.5 g/mol

ZX-006350

Sunitinib N,N-Didesethyl Hydrochloride Impurity

CAS: 1217216-61-9
Formula: C₁₈H₂₀ClFN₄O₂
MW: 378.8 g/mol

ZX-006351

Sunitinib N,N-Didesethyl Impurity

CAS: 1217294-71-7
Formula: C₁₈H₁₉FN₄O₂
MW: 342.4 g/mol

ZX-006352

Tacrolimus Hydroxy Acid Impurity

CAS: 1700657-83-5
Formula: C₄₄H₇₁NO₁₃
MW: 822 g/mol

ZX-027064

Tadalafil Desmethylene Impurity

CAS: 171489-03-5
Formula: C₂₁H₁₉N₃O₄
MW: 377.4 g/mol

ZX-027082

Tamoxifen N-Oxide

CAS: 75504-34-6
Formula: C₂₆H₂₉NO₂
MW: 387.5 g/mol

ZX-032604

Tauro Obeticholic Acid

CAS: 863239-61-6
Formula: C₂₈H₄₉NO₆S
MW: 527.8 g/mol

ZX-022332

Tazarotene Sulfoxide

CAS: 864841-56-5
Formula: C₂₁H₂₁NO₃S
MW: 367.5 g/mol

ZX-022856

Tazarotenic Acid

CAS: 118292-41-4
Formula: C₁₉H₁₇NO₂S
MW: 323.4 g/mol

ZX-027110

Telmisartan Acyl-beta-D-glucuronide

CAS: 250780-40-6
Formula: C₃₉H₃₈N₄O₈
MW: 690.7 g/mol

ZX-027130

Telmisartan-desmethyl dibenzimidazole Impurity

CAS: 884330-09-0
Formula: C₁₈H₁₈N₄
MW: 290.4 g/mol

ZX-006353

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