From Wikipedia, the free encyclopedia
Jump to: navigation, search
Clinical data
ATC code
  • none
Legal status
Legal status
Synonyms (-)-3-hydroxy- N- (2-phenylethyl) morphinan
CAS Number
PubChem CID
ECHA InfoCard 100.006.732
Chemical and physical data
Formula C24H29NO
Molar mass 347.493 g/mol
3D model (Jmol)

Phenomorphan[1] is an opioid analgesic. It is not currently used in medicine, but has similar side-effects to other opiates, which include itching, nausea and respiratory depression.

Phenomorphan is a highly potent drug due to the N-phenethyl group, which boosts affinity to the μ-opioid receptor, and so phenomorphan is around 10x more potent than levorphanol, which is itself 6-8x the potency of morphine. Other analogues where the N-(2-phenylethyl) group has been replaced by other aromatic rings.[2] are even more potent, with the N-(2-(2-furyl)ethyl) and the N-(2-(2-thienyl)ethyl) analogues being 60x and 45x stronger than levorphanol, respectively.[3]

See also[edit]


  1. ^ US patent 2885401, Andre Grussner, Joseph Hellerbach, Otto Schnider, "Process for making morphinan derivatives and products available thereby", published 1956-03-22, issued 1959-05-05 
  2. ^ US patent 2970147, Andre Grussner, Joseph Hellerbach, Otto Schnider, "3-hydroxy-N-(heterocyclic-ethyl)-morphinans", published 1958-11-26, issued 1961-01-31 
  3. ^ Hellerbach J.; Schnider O; Besendorf H; Pellmont B (1966). Synthetic Analgesics: Part IIA. Morphinans. International series of monographs on organic chemistry. Pergamon Press.