gemeprost [ 16,16-DMTDPGEME,16,16-dimethyl-delta(2)-PGE1 methyl ester,16,16-dimethyl-delta(2)-prostaglandin E1 methyl ester,16,16-dimethyl-trans-delta(2)-PGE(1) methyl ester,16,16-dimethyl-trans-delta(2)-prostaglandin E(1) methyl ester,Aventis brand of gemeprost,Cergem,Cervagem,Cervag+żme,Nourypharm brand of gemeprost,ONO 802,ONO-802,PG802,gemeprost, (2E,11alpha,13E,15R)-isomer ] used for preoperative dilation of cervix before surgical abortion; RN given refers to (2E,11alpha,13E,15R)-isomer