Butorphanol tartrate
Butorphanol D-tartrate is the (S,S)-tartaric acid salt of butorphanol. It is used for relief or moderate to severe pain. It has a role as a kappa-opioid receptor agonist, a mu-opioid receptor agonist and an opioid analgesic. It is a morphinane alkaloid and a tartrate salt. It contains a butorphanol.