Norethisterone enanthate

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Norethisterone enanthate
Norethindrone enanthate.svg
Systematic (IUPAC) name
[(9S,10R,13S,14S,17R)-17-ethynyl-13-methyl-3-oxo-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-yl] heptanoate
Clinical data
Trade names Nur-Isterate (Ger, Swed, S.Afr)
AHFS/ International Drug Names
Routes of
Intramuscular injection
Legal status
Legal status
  • AU: S4 (Prescription only)
CAS Number 3836-23-5 YesY
PubChem CID 229295
ChemSpider 199613 N
Synonyms (17β)-17-Ethynyl-3-oxoestr-4-en-17-yl heptanoate
Chemical data
Formula C27H38O3
Molar mass 410.588 g/mol
 NYesY (what is this?)  (verify)

Norethisterone enanthate (INN, BAN), also known as norethindrone enanthate (USAN) (brand names Norigest, Nur-Isterate, Norlutin enanthate, others), is a steroidal progestin with antigonadotropic (and hence antiandrogen and antiestrogen)[1] effects that is used as a hormonal contraceptive.[2][3] It is available in more than 40 countries, but not in the United States.[4] Norethisterone enanthate is the enanthate ester of norethisterone.[5]


  1. ^ Garza-Flores J, Menjívar M, Cardenas M, Reynoso M, García GA, Pérez Palacios G (January 1991). "Further studies on the antigonadotropic mechanism of action of norethisterone". The Journal of Steroid Biochemistry and Molecular Biology 38 (1): 89–93. doi:10.1016/0960-0760(91)90406-U. PMID 1825472. 
  2. ^ F.. Macdonald (1997). Dictionary of Pharmacological Agents. CRC Press. p. 1450. ISBN 978-0-412-46630-4. Retrieved 12 May 2012. 
  3. ^ Index Nominum 2000: International Drug Directory. Taylor & Francis US. 2000. p. 750. ISBN 978-3-88763-075-1. Retrieved 30 May 2012. 
  4. ^ Gretchen M Lentz; Rogerio A. Lobo; David M Gershenson; Vern L. Katz (21 February 2012). Comprehensive Gynecology. Elsevier Health Sciences. pp. 254–. ISBN 0-323-09131-8.  Cite uses deprecated parameter |coauthors= (help)
  5. ^ Norethisterone Acetate @