Melengestrol acetate

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Melengestrol acetate
Melengestrol acetate.png
Systematic (IUPAC) name
17-hydroxy-6-methyl-16-methylenepregna-4,6-diene-3,20-dione acetate
Clinical data
Legal status
CAS number 2919-66-6
ATC code None
PubChem CID 250948
ChemSpider 219803
Chemical data
Formula C25H32O4 
Mol. mass 396.519 g/mol

Melengestrol acetate (INN, USAN), sometimes abbreviated as MGA, is a steroidal progestin and antineoplastic agent.[1] It is not approved for use in humans, and is instead used as a feed additive to promote growth in cattle, a purpose it is licensed for in the United States and Canada.[2] It is an acetate ester of melengestrol, which in contrast, is not used in either animals or humans.[1]

See also[edit]


  1. ^ a b David J. Triggle (1997). Dictionary of pharmacological agents. London: Chapman & Hall. p. 1269. ISBN 0-412-46630-9. 
  2. ^ Jack F. Kay (26 November 2009). Analyses for Hormonal Substances in Food-Producing Animals. Royal Society of Chemistry. p. 139. ISBN 978-0-85404-198-5. Retrieved 27 May 2012.