Molecular Formula: C
19H
27NO
Molecular Weight: 285.42378
InChIKey: VOKSWYLNZZRQPF-GDIGMMSISA-N
The first mixed agonist-antagonist analgesic to be marketed. It is an agonist at the kappa and sigma opioid receptors and has a weak antagonist action at the mu receptor. (From AMA Drug Evaluations Annual, 1991, p97)
From: MeSH