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4-HO-McPT structure.png
Chemical and physical data
Molar mass230.306 g·mol−1
3D model (JSmol)

4-HO-McPT (4-hydroxy-N-methyl-N-cyclopropyltryptamine) is a psychedelic tryptamine derivative. It has serotonergic effects,[1] and has reportedly been sold as a designer drug since around 2016, but was not definitively identified by forensic laboratories until 2018.[2][3]

See also[edit]


  1. ^ US 2019142851, Chadeayne AR, "Compositions comprising a psilocybin derivative and a cannabinoid", published 16 May 2019, assigned to CAAMTECH LLC 
  2. ^ Chapman SJ (March 2018). "PeakAL: Protons I Have Known and Loved, Too — Another Fifty Shades of Grey-Market Spectra". Blotter. 3 (1). doi:10.16889/isomerdesign-5.
  3. ^ "Analytical Report: 4-HO-McPT" (PDF). Nacionalni Forenzični Laboratorij. Slovenia. September 2018.