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CAS Number 437-38-7
Formula: C22H28N2O
Molar mass: 336.471 g/mol
Bioavailability: 92% (transdermal); 89% (intranasal); 50% (buccal); 33% (ingestion)
Excretion: Mostly urinary (metabolites, <10% unchanged drug) Melting point: 87.5 °C (189.5 °F) Trade name: Actiq, Duragesic, Fentora, others
