Product Name:    Levonorgestrel

Synonyms:    13-ethyl-17-alpha-ethynyl-17-beta-hydroxy-4-gonen-3-one;13-ethyl-17-alpha-ethynylgon-4-en-17-beta-ol-3-one;13-ethyl-17-hydroxy-19-dinor-17-alpha-pregn-4-en-20-yn-3-on(+)-1;17-alpha-ethinyl-13-beta-ethyl-17-beta-hydroxy-4-estren-3-one;microluton;norplant2;norplantii;postinor

CAS:    797-63-7

MF:    C21H28O2

MW:    312.45

EINECS:    212-349-8

Product Categories:    Hormone Drugs;MIRENA;Chiral Reagents;Intermediates & Fine Chemicals;Pharmaceuticals;Steroid and Hormone;Steroids

Levonorgestrel[LNG] is a synthetic progestational hormone with actions similar to those of progesterone and about twice as potent as its racemic or[+-]-isomer[norgestrel][1]. It is a kind of emergency contraception, referring as a drug or device used to prevent pregnancy after unprotected sexual intercourse[including sexual assault] or after a recognized contraceptive failure[1]. It is used for contraception, control of menstrual disorders, and treatment of endometriosis. Levonorgestrel is marketed mostly as a combination oral contraceptive under several brand names such as Alesse, Triphasil, and Min-Ovral. It is also marketed under the brand of Plan B.