Estradiol valerate; (8R,9S,13S,14S,17S)-3-hydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl pentanoate; CAS No.: 979-32-8; (8R,9S,13S,14S,17S)-3-hydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl pentanoate (CAS 979-32-8) exemplifies ChemShuttle s supply of cycle compounds for steroidal esters. This pregnane pentanoate (CAS 979-32-8) acts as a cycle compound in hormone replacement therapy research. As a worldwide chemical supplier, ChemShuttle delivers CAS 979-32-8 with analytical documentation for formulation studies.