Diethylstilbestrol monobenzyl ether

Diethylstilbestrol monobenzyl ether
Clinical data
Trade names	Monozol, Hypantin, Pituitrope
Other names	Benzelstilbestrol
Drug class	Nonsteroidal estrogen; Estrogen ether
Identifiers
	IUPAC name 4-[(E)-4-(4-phenylmethoxyphenyl)hex-3-en-3-yl]phenol;
CAS Number	6202-26-2 ;
PubChem CID	3036244;
ChemSpider	2300304;
UNII	DWY5LU966C;
CompTox Dashboard (EPA)	DTXSID701046848 ;
Chemical and physical data
Formula	C25H26O2
Molar mass	358.481 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES CC/C(=C(/CC)\C1=CC=C(C=C1)OCC2=CC=CC=C2)/C3=CC=C(C=C3)O;
	InChI InChI=1S/C25H26O2/c1-3-24(20-10-14-22(26)15-11-20)25(4-2)21-12-16-23(17-13-21)27-18-19-8-6-5-7-9-19/h5-17,26H,3-4,18H2,1-2H3/b25-24+; Key:FVLDPSZNPFWQQP-OCOZRVBESA-N;

Diethylstilbestrol monobenzyl ether (brand names Monozol, Hypantin, Pituitrope), also known as benzelstilbestrol, is a synthetic, nonsteroidal estrogen of the stilbestrol group and an ether of diethylstilbestrol (DES) that is described as a pituitary gland inhibitor (antigonadotropin) and was formerly marketed but is now no longer available.^[1]^[2] It was first synthesized by Wallace & Tiernan Company in 1952, and was described by them as having only weak estrogenic activity.^[3] The drug was used to treat gynecological conditions and infertility in women.^[2]