Methestrol dipropionate (also known as methoestrol dipropionate, promethestrol dipropionate, promethoestrol dipropionate, or dimethylhexestrol dipropionate; brand name Meprane 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.