| Message: | CAS 68-22-4 Norethisterone/sherry@chembj.com
Product Name: Norethisterone
Alias: Norethindrone,19-Norethisterone
CAS: 68-22-4
EINECS: 200-681-6
MF: C20H26O2
MW: 298.42
Assay: 99.1%min
Package: According To Clients' Requirement
Appearance: Off-White to Pale Yellow Solid
Usage: Progesteron. Norethindrone and acetate in combination with estrogen as contraceptive (oral). It is reasonably anticipated to be a human carcinogen.
Norethisterone (or norethindrone) (or 19-nor-17-ethynyltestosterone) is a molecule used in some combined oral contraceptive pills, progestogen only pills and is also available as a standalone drug. It is a progestogen and can be used to treat premenstrual syndrome, painful periods, abnormal heavy bleeding, irregular periods, menopausal syndrome (in combination with oestrogen), or to postpone a period. It is also commonly used to help prevent uterine hemorrhage in complicated non-surgical or pre-surgical gynecologic cases. Norethindrone was the first orally highly active progestin to be synthesized. It was synthesized for the first time by chemists Luis Miramontes, Carl Djerassi, and George Rosenkranz at Syntex in Mexico City in 1951. It was the progestin used in one of the first three oral contraceptives. Its related ester, norethisterone acetate, is used for the same indications.
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