Phenestrol

Phenestrol
Clinical data
Other names	Fenestrol; NSC-183736; hexestrol bis[4-[bis(2-chloroethyl)amino]phenylacetate
Identifiers
	IUPAC name [4-[4-[4-[2-[4-[Bis(2-chloroethyl)amino]phenyl]acetyl]oxyphenyl]hexan-3-yl]phenyl] 2-[4-[bis(2-chloroethyl)amino]phenyl]acetate;
CAS Number	19659-38-2;
PubChem CID	161290;
ChemSpider	141682;
CompTox Dashboard (EPA)	DTXSID60941425 ;
Chemical and physical data
Formula	C42H48Cl4N2O4
Molar mass	786.66 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES CCC(C1=CC=C(C=C1)OC(=O)CC2=CC=C(C=C2)N(CCCl)CCCl)C(CC)C3=CC=C(C=C3)OC(=O)CC4=CC=C(C=C4)N(CCCl)CCCl;
	InChI InChI=1S/C42H48Cl4N2O4/c1-3-39(33-9-17-37(18-10-33)51-41(49)29-31-5-13-35(14-6-31)47(25-21-43)26-22-44)40(4-2)34-11-19-38(20-12-34)52-42(50)30-32-7-15-36(16-8-32)48(27-23-45)28-24-46/h5-20,39-40H,3-4,21-30H2,1-2H3; Key:GTWGWCYJKHSRHO-UHFFFAOYSA-N;

Phenestrol, or fenestrol, also known as hexestrol bis[4-[bis(2-chloroethyl)amino]phenylacetate, is a synthetic, nonsteroidal estrogen and cytostatic antineoplastic agent (i.e., chemotherapy drug) and a chlor phen acyl nitrogen mustard ester of hexestrol which was developed in the early 1960s for the treatment of hormone-dependent tumors but was never marketed.