methyldesorphine methyldesorphine methyldesorphine is an opioid analgesic. first synthesized in germany in 1940 and patented in the us in 1952, it has a high potential for abuse as with any potent opioid agonist, and is sometimes found along with desomorphine as a component of the home-made opioid mixture known as "krokodil" used in russia and the neighboring former soviet republics. it is approximately 15 times more potent than morphine as an analgesic but if the 6-7 bond is saturated, the β isomer is some 50 times more potent than morphine. methyldesorphineclinical dataother names3-hydroxy-6,n-dimethyl- 4,5-epoxymorphin-6-enatc codenonelegal statuslegal status au: s9 (prohibited substance) ca: schedule i de: anlage i (authorized scientific use only) us: schedule i identifiers iupac name (5α)-6,17-dimethyl-6,7-didehydro-4,5-epoxymorphinan-3-ol cas number16008-36-9 ypubchem cid5362518chemspider4515065 nuniiy460n7w76bcomptox dashboard (epa)dtxsid60166797 echa infocard100.036.474 chemical and physical dataformulac18h21no2molar mass283.371 g·mol−13d model (jsmol)interactive image smiles cc1=cc23cc4=c52(1oc5=c(c=c4)o)ccn3c inchi inchi=1s/c18h21no2/c1-10-3-5-12-13-9-11-4-6-14(20)16-15(11)18(12,17(10)21-16)7-8-19(13)2/h3-4,6,12-13,17,20h,5,7-9h2,1-2h3/t12-,13+,17-,18-/m0/s1 nkey:cufwyvofdyvcpm-ggnlrsjosa-n n ny (what is this?) (verify) methyldesorphine is listed as a schedule i narcotic controlled substance under the controlled substances act 1970 in the united states with a dea acscn of 9302 and zero annual aggregate manufacturing quota. the free base conversion ratio of the hydrochloride is 0.89.