14-ethoxymetopon 14-ethoxymetopon 14-ethoxymetopon is an opioid analog that is a derivative of metopon which has been substituted with an ethoxy group at the 14-position. it is a highly potent analgesic drug several hundred times more potent than morphine. 14-ethoxymetoponidentifiers iupac name 3-hydroxy-14-ethoxy-5-methyl-7,8-dihydro-4,5α-epoxy-17-methylmorphinan-6-one cas number131575-04-7 npubchem cid5487378chemspider4589341 ycomptox dashboard (epa)dtxsid50157119 chemical and physical dataformulac20h25no4molar mass343.423 g·mol−13d model (jsmol)interactive image smiles ccoc12ccc(=o)3(c14ccn(2cc5=c4c(=c(c=c5)o)o3)c)c inchi inchi=1s/c20h25no4/c1-4-24-20-8-7-15(23)18(2)19(20)9-10-21(3)14(20)11-12-5-6-13(22)17(25-18)16(12)19/h5-6,14,22h,4,7-11h2,1-3h3/t14-,18-,19?,20?/m1/s1 ykey:ldtuytorbpktno-hpjzbdcmsa-n y ny (what is this?) (verify)