Bucinnazine
Summary Bucinnazine, also known as AP-237 or 1-butyryl-4-cinnamylpiperazine, is an opioid analgesic drug with a significant history of use in China for managing pain in cancer patients dating back to 1986. This compound is among the most potent in a series of piperazine-amides that were initially synthesized and documented in Japan during the 1970s. Bucinnazine …