isoprednidene isoprednidene isoprednidene (developmental code name stc 407) is a synthetic glucocorticoid corticosteroid which was never marketed. isoprednideneclinical dataother namesstc 407; 6-dehydro-16-methylene hydrocortisone; 11β,17α,21-trihydroxy-16-methylenepregna-4,6-diene-3,20-dionedrug classcorticosteroid; glucocorticoididentifiers iupac name (8s,9s,10r,11s,13s,14s,17r)-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-16-methylidene-1,2,8,9,11,12,14,15-octahydrocyclopentaphenanthren-3-one cas number17332-61-5pubchem cid20055344chemspider16736652unii4g6a72xc0ichemblchembl2107195chemical and physical dataformulac22h28o5molar mass372.461 g·mol−13d model (jsmol)interactive image smiles c12ccc(=o)c=c1c=c32(c4(3cc(=c)4(c(=o)co)o)c)o 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/h4-5,9,15-17,19,23,25,27h,1,6-8,10-11h2,2-3h3/t15-,16-,17-,19+,20-,21-,22-/m0/s1key:maaghjoyemwlnt-cwnvbekcsa-n