methestrol dipropionate methestrol dipropionate methestrol dipropionate or methoestrol dipropionate (brand name meprane dipropionate), also known as promethestrol dipropionate or promethoestrol dipropionate or as dimethylhexestrol dipropionate, is a synthetic nonsteroidal estrogen of the stilbestrol group related to diethylstilbestrol that is or was used clinically. it is the dipropionate form of methestrol (or promethestrol), which, in contrast to methestrol dipropionate, was never marketed. methestrol dipropionateclinical datatrade namesmeprane dipropionateother namesmethoestrol dipropionate; metestrol dipropionate; promethestrol dipropionate; promethoestrol dipropionate; dimethylhexestrol dipropionatedrug classnonsteroidal estrogen; estrogen esteridentifiers iupac name phenyl] propanoate cas number130-73-4pubchem cid6765chemspider6507unii199o25z2bqchemical and physical dataformulac26h34o4molar mass410.554 g·mol−13d model (jsmol)interactive image smiles ccc(c1=cc(=c(c=c1)oc(=o)cc)c)c(cc)c2=cc(=c(c=c2)oc(=o)cc)c inchi inchi=1s/c26h34o4/c1-7-21(19-11-13-23(17(5)15-19)29-25(27)9-3)22(8-2)20-12-14-24(18(6)16-20)30-26(28)10-4/h11-16,21-22h,7-10h2,1-6h3key:orhvfdbdwjtzin-uhfffaoysa-n