NCIt definition : The levorotatory form of norgestrel and synthetic progestogen with progestational
and androgenic activity. Levonorgestrel binds to the progesterone receptor in the
nucleus of target cells, thereby stimulating the resulting hormone-receptor complex,
initiating transcription, and increasing the synthesis of certain proteins. This results
in a suppression of luteinizing hormone (LH) activity and an inhibition of ovulation,
as well as an alteration in the cervical mucus and endometrium.;
Alternative definition : NCI-GLOSS: A form of the hormone progesterone that is made in the laboratory and used
to prevent pregnancy. It is being studied in the prevention of ovarian and endometrial
cancer, and in the treatment of other conditions. Levonorgestrel is a type of oral
contraceptive.;
UNII : 5W7SIA7YZW;
InChIKey : WWYNJERNGUHSAO-XUDSTZEESA-N;
CAS number : 797-63-7;
Drug name : Plan B; Norplant; Mirena;
Chemical formula : C21H28O2;
ChEBI ID : CHEBI:6443;
Codes from synonyms : 01044; CDR0000543113; CDR0000562697; CDR0000562696;