Many synthetic

cannabinoid Cannabinoids () are several structural classes of compounds found in the cannabis plant primarily and most animal organisms (although insects lack such receptors) or as synthetic compounds. The most notable cannabinoid is the phytocannabinoid tet ...

s were designed by Pfizer in the 1970s and 1980s, and feature an alphanumeric code beginning with the prefix "CP" (after

Charles Pfizer Karl Christian Friedrich Pfizer (; March 22, 1824 – October 19, 1906), known as Charles Pfizer, was a German-American businessman and chemist who co-founded the Pfizer pharmaceutical company with his cousin, Charles F. Erhart, in 1849, as Chas ...

). Recently, several members of this class of cannabinoids have been discovered in recreational drug products. *

CP 47,497 CP 47,497 or (C7)-CP 47,497 is a cannabinoid receptor agonist drug, developed by Pfizer in the 1980s. It has analgesic effects and is used in scientific research. It is a potent CB1 agonist with a ''K''d of 2.1 nM. Homologue On the 19th of ...

— * (C6)-CP 47,497 — * (C7)-CP 47,497 (CP 47,497 itself) — * (C8)-CP 47,497 (Cannabicyclohexanol) — * (C9)-CP 47,497 — *

CP 50,556-1 Levonantradol (CP 50,556-1) is a synthetic cannabinoid analog of dronabinol (Marinol) developed by Pfizer in the 1980s. It is around 30x more potent than THC, and exhibits antiemetic and analgesic effects via activation of CB1 and CB2 cannabinoid ...

(Levonantradol) — *

CP 55,244 CP 55,244 is a chemical compound which is a cannabinoid receptor agonist. It has analgesic effects and is used in scientific research. It is an extremely potent CB1 full agonist with a Ki of 0.21 nM, making it more potent than the commonly ...

— *

CP 55,940 55,940 is a synthetic cannabinoid which mimics the effects of naturally occurring THC (one of the psychoactive compounds found in cannabis). CP 55,940 was created by Pfizer in 1974 but was never marketed. It is currently used to study the endoca ...

— * (±)-CP 55,940 — (±)-CP 55,940 is a widely used cannabinoid research tool. * (+)-CP 55,940 — * (-)-CP 55,940 — *

CP-945,598 Otenabant (CP-945,598) is a drug which acts as a potent and highly selective CB1 antagonist. It was developed by Pfizer for the treatment of obesity, but development for this application has been discontinued following the problems seen during ...

(Otenabant) —

See also