Estriol dihexanoate

Estriol dihexanoate
Clinical data
Other names	Oestriol dihexanoate; Estriol 3,17β-dihexanoate; 16α-Hydroxyestra-1,3,5(10)-triene-3,17β-diyl dihexanoate
Routes of; administration	Intramuscular injection
Drug class	Estrogen; Estrogen ester
Identifiers
	IUPAC name [(8R,9S,13S,14S,16R,17R)-3-hexanoyloxy-16-hydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-17-yl] hexanoate;
CAS Number	104202-96-2 ;
PubChem CID	128509;
ChemSpider	113906;
UNII	J2K5XW8K72;
CompTox Dashboard (EPA)	DTXSID90908869 ;
Chemical and physical data
Formula	C30H44O5
Molar mass	484.677 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES CCCCCC(=O)O[C@H]1[C@@H](C[C@@H]2[C@@]1(CC[C@H]3[C@H]2CCC4=C3C=CC(=C4)OC(=O)CCCCC)C)O;
	InChI InChI=1S/C30H44O5/c1-4-6-8-10-27(32)34-21-13-15-22-20(18-21)12-14-24-23(22)16-17-30(3)25(24)19-26(31)29(30)35-28(33)11-9-7-5-2/h13,15,18,23-26,29,31H,4-12,14,16-17,19H2,1-3H3/t23-,24-,25+,26-,29+,30+/m1/s1; Key:ZOVABFBGAYSQTL-AECPDVIXSA-N;

Estriol dihexanoate, or estriol 3,17β-dihexanoate, is a synthetic estrogen and estrogen ester – specifically, the C3 and C17β dihexanoate ester of estriol – which was first described in 1963 and was never marketed. Following a single intramuscular injection of 8.90 mg estriol dihexanoate (equivalent to 5.0 mg estriol) in an oil solution, peak levels of estriol occurred after 2.1 to 3.4 days, an elimination half-life of 187 to 221 hours was observed, and estriol levels remained elevated for up to 20 to 50 days. For comparison, the durations of estriol and estriol dipropionate were far shorter.