Wiktionary
bremazocine
n. A κ-opioid receptor agonist related to pentazocine.
Wikipedia
Bremazocine
Bremazocine is a κ-opioid receptor agonist related to pentazocine. It has potent and long-lasting analgesic and diuretic effects. It has 200 times the activity of morphine, but appears to have no addictive properties and does not depress breathing.