Wikipedia
Methestrol
Methestrol ( INN) or methoestrol, also known as promethestrol or promethoestrol ( BAN) or as dimethylhexestrol, is a synthetic, non-steroidal estrogen of the stilbestrol group related to diethylstilbestrol that was never marketed.
A related drug is methestrol dipropionate (or promethestrol dipropionate) (brand name Meprane Dipropionate).