Ethisteroneproduct Name: Ethisterone 434-03-7 
Synonyms:Ethisterone,98%;17-alpha-ethynyltestosterone;pregneninolone;17a-ethynyl-17b-hydroxy-4-androsten-3-one;17a-ethynyltestosterone;anhydrohydroxyprogesterone;ethynyltestosterone;Gestoral;17-hydroxypregn-4-en-20-yn-3-one;(8xi,9xi,10xi,13xi,14xi,17alpha)-17-hydroxypregn-4-en-20-yn-3-one;(8xi,9xi,14xi,17alpha)-17-hydroxypregn-4-en-20-yn-3-one;(17alpha)-17-hydroxypregn-4-en-20-yn-3-one 
Molecular Formula: C21H28O2 
CAS Registry Number: 434-03-7 
EINECS :207-096-5 
Assay: 99% min.
Usage: pharmaceutical material, Steroid hormone, estrogen.