17alpha-hydroxy steroid 20-oxo steroid 3-oxo steroid 3-oxo Delta(4)-steroid Megestrol megestrol 17-Hydroxy-6-methylpregna-4,6-diene-3,20-dione 17-hydroxypregna-4,6-diene-3,20-dione 6703 A 17alpha-hydroxy steroid that has formula C22H30O3. Beilstein:3164843 C22H30O3 CHEBI:6722 ChemIDplus:3562-63-8 DrugBank:DB00351 InChI=1S/C21H28O3/c1-13(22)21(24)11-8-18-16-5-4-14-12-15(23)6-9-19(14,2)17(16)7-10-20(18,21)3/h4-5,12,16-18,24H,6-11H2,1-3H3/t16-,17+,18+,19+,20+,21+/m1/s1 InChIKey=JBVNBBXAMBZTMQ-CEGNMAFCSA-N KEGG COMPOUND:C07120 KEGG DRUG:D08167 Megestrol [H][C@]12CC[C@@]3(C)[C@@]([H])(CC[C@]3(O)C(C)=O)[C@]1([H])C=CC1=CC(=O)CC[C@]21C megestrol megestrolum