The synthesis of [O-methyl-11C]venlafaxine: A non-classical, fast-acting antidepressant

A. D. Gee, D. F. Smith, A. Gjedde

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


As part of our program to develop PET tracers for the 5-HT reuptake site, venlafaxine, a non-classical, fast-acting antidepressant, was selected as a candidate for labelling with 11C for in vivo evaluation. [O-methyl-11C]venlafaxine was produced by the alkylation of O-desmethyl venlafaxine with [11C]methyl iodide followed by HPLC purification and formulation. Radiochemically pure [O-methyl-11C]venlafaxine was obtained in a 30 ± 5 % decay corrected radiochemical yield and a specific activity > 50 GBq/μmol (1.4 Ci/μmol) at the end of synthesis. For a typical production starting with 46 GBq (1.3 Ci) [11C]CO2, 5.2 GBq (140 mCi) [O-methyl-11C]venlafaxine was obtained as a sterile, formulated solution in a synthesis time of 30 min (counted from EOB).

Original languageEnglish (US)
Pages (from-to)89-95
Number of pages7
JournalJournal of Labelled Compounds and Radiopharmaceuticals
Issue number1
StatePublished - Jan 1997
Externally publishedYes


  • 5-HT reuptake
  • C
  • PET
  • Venlafaxine
  • antidepressants

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Radiology Nuclear Medicine and imaging
  • Drug Discovery
  • Spectroscopy
  • Organic Chemistry


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