4-Phenylpiperidine

4-Phenylpiperidine is a chemical compound. It features a benzene ring bound to a piperidine ring. 4-Phenylpiperidine is a chemical compound. It features a benzene ring bound to a piperidine ring. 4-Phenylpiperidine is the base structure for a variety of opioids, such as pethidine (meperidine), ketobemidone, alvimopan, loperamide, and diphenoxylate. Drugs derived from 4-phenylpiperidine proper include: