Ethisterone English Synonyms: 4,17a-pregnen-17b-ol-20-yn-3-one; 17BETA-HYDROXY-4,17ALPHA-PREGNEN-20-YN-3-ONE CAS NO.: 434-03-7 Assay: 98% Molecular Formula: C21H28O2 Molecular Weight: 312.45 Packing: 1kg / foil bags Appearance: White or milky white crystalline powder. Melting point 269-275 ℃, at 190-195 ℃ in high vacuum sublimation. Slightly soluble in ethanol, acetone, chloroform and vegetable oils, in fact, insoluble in water Usage: Similar to the yellow like progesterone, for the treatment of excessive menstrual bleeding, or sub-camps can also be used to prevent threatened abortion and habitual abortion. Progesterone is a progestin by the corpus luteum and the placenta secreted is more than the synthetic E-mail: zq@chembj.com Skype: fan-@outlook.com