Cobimetinib-D9, CAS 2714409-22-8, ist ein deuteriertes Isotopolog von Cobimetinib, einem MEK1/2-Inhibitor, mit der Summenformel C21H12D9F3IN3O2 und einer Molekülmasse von 540.37 g/mol. Die D9-Substitution erhält das Grundgerüst, verändert jedoch Retentionsverhalten und Massensignal, wodurch sich das Material für isotopenverdünnte Erfassung von prozessbedingten und abbauassoziierten Spurenkomponenten eignet. Als iodiertes, fluoriertes heteroaromatisches Kinaseinhibitor-Analogon wird es typischerweise mittels RP-LC-MS/MS und hochauflösender MS charakterisiert, bei Bedarf ergänzt durch NMR zur Strukturzuordnung. Der wissenschaftliche Kontext umfasst Verunreinigungsprofilierung, Stabilitätsuntersuchungen und methodische Quantifizierung.
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