Progestogen 19-Norethindrone acetate 98% Powder 51-98-9 Senwayer

Norethindrone acetate is a female progestin approved by FDA for the treatment of endometriosis, uterine bleeding caused by abnormal hormone levels, and secondary amenorrhea.
Norethisterone acetate is a 3-oxo Delta(4)-steroid that is norethisterone in which the hydroxy group has been converted to its acetate ester. It has a role as a synthetic oral contraceptive and a progestin. It is a 3-oxo-Delta(4) steroid, a terminal acetylenic compound and an acetate ester. It derives from a norethisterone.|Norethindrone Acetate is the orally bioavailable acetate salt of norethindrone, a synthetic progestin with some anabolic, estrogenic, and androgenic activities. As do all progestins, norethindrone binds to and activates nuclear progesterone receptors (PRs) in target tissues such as the pituitary and reproductive system; ligand-receptor complexes are translocated to the nucleus where they bind to progesterone response elements (PREs) located on target genes, followed by various transcriptional events and histone acetylation. Physiological effects include the inhibition of luteinizing hormone (LH) release, an increase in the endometrial luteal-phase, and alterations in endocervical mucus secretion.|Acetate ester of norethindrone that is used as a long-term contraceptive (CONTRACEPTIVE AGENTS).