Legal status
Legal status
  • DE: NpSG (Industrial and scientific use only)
  • UK: Class A
  • (R)-3-(N-methylpyrrolidin-2-ylmethyl)-4-hydoxyindole
CAS Number
PubChem CID
CompTox Dashboard (EPA)
Chemical and physical data
Molar mass229.303 g·mol−1
3D model (JSmol)
  • OC1=C2C(C[C@@]3([H])CCCN3C)=CNC2=CC=C1
  • InChI=1S/C14H18N2O/c1-16-7-3-4-11(16)8-10-9-15-12-5-2-6-13(17)14(10)12/h2,5-6,9,11,15,17H,3-4,7-8H2,1H3/t11-/m1/s1 ☒N
 ☒NcheckY (what is this?)  (verify)

4-HO-MPMI (also known as 4-Hydroxy-N-methyl-(α,N-trimethylene)-tryptamine or lucigenol) is a tryptamine derivative that is a psychedelic drug. It was developed by the team led by David Nichols from Purdue University in the late 1990s. This compound produces hallucinogen-appropriate responding in animal tests with a similar potency to the amphetamine-derived psychedelic DOI, and has two enantiomers, with only the (R)-enantiomer being active.[1]

The binding affinity for 5-HT2A receptor is 13 ± 2 nM (Ki [125I]DOI). It is reported at doses starting at 0.5 mg and 1.0-1.5 mg seem to be psychedelic doses. The duration it is reported between six and eight hours. The effects, still not too documented, are OEV/CEV, sedation and anxiety.[2][unreliable source?]

See also


  1. ^ Gerasimov M, Marona-Lewicka D, Kurrasch-Orbaugh DM, Qandil AM, Nichols DE (1999). "Further studies on oxygenated tryptamines with LSD-like activity incorporating a chiral pyrrolidine moiety into the side chain". Journal of Medicinal Chemistry. 42 (20): 4257–4263. CiteSeerX doi:10.1021/jm990325u. PMID 10514296.
  2. ^ "Archived copy". Archived from the original on 2011-07-11. Retrieved 2010-08-02.((cite web)): CS1 maint: archived copy as title (link)