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19-Norethindrone acetate

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19-Norethindrone acetate Basic information
19-Norethindrone acetate Chemical Properties
  • Melting point:161-162°
  • Boiling point:416.25°C (rough estimate)
  • Density 1.1236 (rough estimate)
  • refractive index -34 ° (C=1, Dioxane)
  • storage temp. 2-8°C
  • solubility Practically insoluble in water, freely soluble in methylene chloride, soluble in alcohol.
  • form neat
  • color Crystals from Me2CO/hexane
  • Water Solubility 3.162mg/L(10 ºC)
  • Merck 14,6697
  • CAS DataBase Reference51-98-9(CAS DataBase Reference)
  • NIST Chemistry ReferenceNorethindrone acetate(51-98-9)
Safety Information
  • Hazard Codes Xn
  • Risk Statements 40-48
  • Safety Statements 36/37
  • WGK Germany 3
  • RTECS RC8965000
  • HS Code 29372390
  • Toxicitydlt-mus-orl 1120 mg/kg/4W MUREAV 26,535,74
19-Norethindrone acetate Usage And Synthesis
  • Chemical PropertiesWhite Solid
  • OriginatorNorlestrin,Parke Davis ,US,1964
  • UsesProgesteron. Norethindrone and acetate in combination with estrogen as contraceptive (oral). It is reasonably anticipated to be a human carcinogen.
  • UsesOral contraceptive (in combination with estrogen)
  • DefinitionChEBI: A 3-oxo Delta4-steroid that is norethisterone in which the hydroxy group has been converted to its acetate ester.
  • Manufacturing Process2.98 grams of 17-ethinyl-19-nor-testosterone (norethindrone) are suspended in 30 cc of acetic anhydride and a solution of 1.9 grams of p-toluenesulfonic acid in 19 cc of acetic anhydride is gradually added while cooling and stirring. Complete dissolution takes place after about one hour. After additional 30 to 60 minutes, a thick, pasty mass separates. The reaction is permitted to continue for a total period of 5 hours, whereupon water is added to the reaction mixture and the 3-enol-17-diacetate which separates after stirring for 1 to 2 hours is filtered off, washed until neutral and dried in vacuo over calcium chloride at room temperature.
    In order to prepare the monoacetate, the crude diacetate is suspended in 150 cc of methanol and, after adding 1.5 cc, concentrated hydrochloric acid, heated to boiling for 15 minutes in a nitrogen atmosphere. The crude monoacetate which separates upon the addition of water after cooling is filtered off, washed and dried in vacuo over calcium chloride at room temperature. The pure 17-acetete, obtained after repeated recrystallizations from methylene chloride/hexane has a MP of 161° to 162°C.
  • brand nameAygestin (Duramed); Norlutate (Parke-Davis).
  • Therapeutic Function Chemical Name: 19-Nor-17α-pregn-4-en-20-yn-3one, 17-hydroxy-, acetate
  • Safety ProfileSuspected carcinogen with experimental tumorigenic data. Human reproductive effects by ingestion and implant routes: menstrual cycle changes, postpartum effects, and changes in fertility. A human teratogen by an unspecified route with developmental abnormalities of the urogenital system. Mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes. Used in the treatment of menstrual dsorders and uterine bleedmg.
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