icometasone icometasone icometasone is a synthetic glucocorticoid corticosteroid which was never marketed. icometasoneclinical dataother namesicomethasone; 9α-chloro-11β,17α,21-trihydroxy-16α-methylpregna-1,4-diene-3,20-dionedrug classcorticosteroid; glucocorticoididentifiers iupac name (8s,9r,10s,11s,13s,14s,16r,17r)-9-chloro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-6,7,8,11,12,14,15,16-octahydrocyclopentaphenanthren-3-one cas number4647-20-5pubchem cid11407187chemspider9582082unii2lp8sj795gcomptox dashboard (epa)dtxsid40196850 chemical and physical dataformulac22h29clo5molar mass408.92 g·mol−13d model (jsmol)interactive image smiles c1c23ccc4=cc(=o)c=c4(3((c2(1(c(=o)co)o)c)o)cl)c inchi inchi=1s/c22h29clo5/c1-12-8-16-15-5-4-13-9-14(25)6-7-19(13,2)21(15,23)17(26)10-20(16,3)22(12,28)18(27)11-24/h6-7,9,12,15-17,24,26,28h,4-5,8,10-11h2,1-3h3/t12-,15+,16+,17+,19+,20+,21+,22+/m1/s1key:nbmkjkdgkreapl-cxsfzgcwsa-n