Talwin is a brand name medication included in a group of medications called Benzomorphan derivatives . (rxwiki.com)
OPIOIDS2
Opium is an alcoholic tincture of the pod latex and is comprised of approximately 10% morphine, 0.5% codeine, and other lesser naturally-occurring opioids (the plant synthesizes these opiates of the "benzomorphan" class in a biosythetic pathway beginning with the amino acid, L-tyrosine. (scienceblogs.com)
Later, fully synthetic opioids were derived from morphinan (e.g. levorphanol), diphenylheptane (e.g. methadone), benzomorphan (e.g. pentazocine), and phenylpiperidine (e.g. fentanyl). (catalogueofopioids.net)
Site1
Ahmed, MS, Mather, A & Enna, SJ 1999, ' Binding of [ 3 H]desglycinyl remacemide to rat brain membranes: Association with the benzomorphan attachment site of the N-methyl-D-aspartic acid receptor channel ', Brain Research , vol. 827, no. 1-2, pp. 46-50. (utmb.edu)
Pentazocine4
Benzomorphan is a chemical compound that is the base for a series of drugs which variably act on the opioid kappa and sigma receptors, including the following compounds: 5,9-DEHB 8-CAC Alazocine Anazocine Bremazocine Butinazocine Carbazocine Cogazocine Cyclazocine Dezocine Eptazocine Etazocine Ethylketocyclazocine Fluorophen Gemazocine Ibazocine Ketazocine Metazocine Moxazocine Pentazocine Phenazocine Quadazocine Thiazocine Tonazocine Volazocine Zenazocine Some of these agents are used as analgesics, including pentazocine, phenazocine, dezocine, and eptazocine. (wikipedia.org)
Pentazocine is a member of the benzazocine series (also known as the benzomorphan series). (nih.gov)
Based on May's work on benzomorphans, the drug pentazocine was introduced in the 1960s. (nih.gov)
Pentazocine is a synthetically prepared prototypical mixed agonist-antagonist narcotic (opioid analgesic) drug of the benzomorphan class of opioids used to treat moderate to moderately severe pain. (ncats.io)