Estrone cyanate

Estrone cyanate
CAS Number 23623-36-1
ChemSpider 26377079
Chemical and physical data
Formula C19H21NO2
Molar mass 295.380 g/mol
3D model (Jmol) Interactive image

Estrone cyanate, or estrone 3-O-cyanate, is a semisynthetic, steroidal estrogen and an estrogen ester – specifically, the 3-O-cyanate ester of estrone – that was investigated for use in oral contraceptives but was found to be of relatively low potency and ultimately was never marketed.[1][2][3]


  1. J. Elks (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. p. 900. ISBN 978-1-4757-2085-3.
  2. Endokrinologie. 1972. p. 293.
  3. Carol W, Klinger G, Hempel E, Böhm W, Chemnitius KH (1972). "[Experimental and clinical studies with new estrogen derivatives]". Endokrinologie (in German). 59 (3): 282–94. PMID 5071777.

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