amebucort amebucort amebucort (developmental code name zk-90999) is a synthetic glucocorticoid corticosteroid which was never marketed. amebucortclinical dataother nameszk-90999; 11β,17α,21-trihydroxy-6α-methylpregn-4-ene-3,20-dione 17-butyrate 21-acetatedrug classcorticosteroid; glucocorticoididentifiers iupac name phenanthren-17-yl] butanoate cas number83625-35-8pubchem cid3086167chemspider2342857unii7yrf8g0g0fchemblchembl2104661comptox dashboard (epa)dtxsid60232466 chemical and physical dataformulac28h40o7molar mass488.621 g·mol−13d model (jsmol)interactive image smiles cccc(=o)o1(cc21(c(32c(c4=cc(=o)cc34c)c)o)c)c(=o)coc(=o)c inchi inchi=1s/c28h40o7/c1-6-7-24(33)35-28(23(32)15-34-17(3)29)11-9-20-19-12-16(2)21-13-18(30)8-10-26(21,4)25(19)22(31)14-27(20,28)5/h13,16,19-20,22,25,31h,6-12,14-15h2,1-5h3/t16-,19-,20-,22-,25+,26-,27-,28-/m0/s1key:qrrvocxlqylnec-ppjdwoavsa-n