Org 25435

Org 25435
PubChem (CID) 9885653
Chemical and physical data
Formula C19H31NO6
Molar mass 369.451 g/mol
3D model (Jmol) Interactive image

Org 25435 is a synthetic drug developed by Organon International, which acts as a GABAA receptor positive allosteric modulator, and produces sedative effects. It has been researched for use as an intravenous anesthetic agent, with positive results in initial trials, although negative side effects like hypotension and tachycardia, as well as unpredictable pharmacokinetics at higher doses, have meant it has ultimately not been adopted for medical use.[1][2]


  1. Anderson A, Belelli D, Bennett DJ, Buchanan KI, Casula A, Cooke A, Feilden H, Gemmell DK, Hamilton NM, Hutchinson EJ, Lambert JJ, Maidment MS, McGuire R, McPhail P, Miller S, Muntoni A, Peters JA, Sansbury FH, Stevenson D, Sundaram H. Alpha-amino acid phenolic ester derivatives: novel water-soluble general anesthetic agents which allosterically modulate GABA(A) receptors. Journal of Medicinal Chemistry. 2001 Oct 25;44(22):3582-91. PMID 11606122
  2. Rigby-Jones AE, Sneyd JR, Vijn P, Boen P, Cross M. First administration to man of Org 25435, an intravenous anaesthetic: A Phase 1 Clinical Trial. BMC Anesthesiology. 2010 Jun 29;10:10. PMID 20587019

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