IUPAC ID: (5α,6α)-7,8-didehydro-4,5-epoxy-17-methylmorphinan-3,6-diol diacetate
Formula: C21H23NO5
Bioavailability: <35% (by mouth), 44–61% (inhaled)
Addiction liability: High
Onset of action: Within minutes
Biological half-life: 2–3 minutes
Duration of action: 4 to 5 hours
