16α-methyl-11-oxoprednisolone 16α-methyl-11-oxoprednisolone 16α-methyl-11-oxoprednisolone, also known as dexamethasone impurity j, is a synthetic glucocorticoid corticosteroid which was reported in 1979 and was never marketed. 16α-methyl-11-oxoprednisoloneclinical dataother namesdexamethasone impurity j; 17α,21-dihydroxy-16α-methylpregna-1,4-diene-3,11,20-trionedrug classcorticosteroid; glucocorticoididentifiers iupac name (8s,9s,10r,13s,14s,16r,17r)-17-hydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-6,7,8,9,12,14,15,16-octahydrocyclopentaphenanthrene-3,11-dione cas number2036-77-3pubchem cid68141632chemspider48063904uniinj0ll8hn9xcomptox dashboard (epa)dtxsid60738059 chemical and physical dataformulac22h28o5molar mass372.461 g·mol−13d model (jsmol)interactive image smiles c1c23ccc4=cc(=o)c=c4(3c(=o)c2(1(c(=o)co)o)c)c inchi inchi=1s/c22h28o5/c1-12-8-16-15-5-4-13-9-14(24)6-7-20(13,2)19(15)17(25)10-21(16,3)22(12,27)18(26)11-23/h6-7,9,12,15-16,19,23,27h,4-5,8,10-11h2,1-3h3/t12-,15+,16+,19-,20+,21+,22+/m1/s1key:pidanaqulikbqs-vuozllhnsa-n