Norethisterone
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| Norethisterone
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| Systematic (IUPAC) name | |
| (17β)-17-ethynyl-17-hydroxyestr-4-en-3-one | |
| Identifiers | |
| CAS number | |
| ATC code | G03 |
| PubChem | |
| DrugBank | |
| Chemical data | |
| Formula | C20H26O2 |
| Mol. mass | 298.419 g/mol |
| Synonyms | (8R,9S,10R,13S,14S,17S)-17-ethynyl-17-hydroxy-13-methyl-1, 2,6,7,8,9,10,11,12,14,15, 16-dodecahydrocyclopenta[a]phenanthren-3-one |
| Pharmacokinetic data | |
| Bioavailability | 64% |
| Protein binding | >95% |
| Metabolism | ? |
| Half life | 7 hours |
| Excretion | ? |
| Therapeutic considerations | |
| Pregnancy cat. |
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| Legal status | |
| Routes | ? |
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Overview
Norethisterone (or norethindrone) (or 19-nor-17α-ethynyltestosterone) is a molecule used in some combined oral contraceptive pills and in some progestogen only pills. 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. Norethindrone was the first orally highly active progestin to be synthesized. It was synthesized for the first time by chemists Luis E. Miramontes, Carl Djerassi, and George Rosenkranz at Syntex in Mexico City in 1951.[1] It was the progestin used in one of the first two oral contraceptives. It is often used as the related ester, norethisterone acetate.
References
- ↑ Djerassi C, Miramontes L, Rosenkranz G, Sondheimer F (1954). "Steroids. LIV. Synthesis of 19-Nor-17α-ethynyltestosterone and 19-Nor-17α-methyltestosterone" (abstract page). J Am Chem Soc 76 (16): 4089–4091. doi:10.1021/ja01645a009.
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
