CAS No:3562-63-8 ||Chemical Formula:C22H30O3 ||Molecular Weight:342.47900 ||Exact Mass:342.21949 ||6-methyl-17-hydroxypregna-4,6-diene-3,20-dione (megestrol);(8R,9S,10R,13S,14S,17R)-17-acetyl-17-hydroxy-6,10,13-trimethyl-8,9,10,11,12,13,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3(2H)-one