Systematic (IUPAC) name
Clinical data
Pregnancy cat.  ?
Legal status  ? (UK) ? (US) See Legality
Routes Oral, IV, intranasal, rectal
Pharmacokinetic data
Metabolism Liver
Half-life 4-6 Hours
Excretion Kidneys/Urine
CAS number 77872-43-6 YesY
ATC code None
PubChem CID 10082683
ChemSpider 8258221 YesY
Chemical data
Formula C14H20N2O 
Mol. mass 232.32 g/mol
SMILES eMolecules & PubChem
Physical data
Melt. point 123–125 °C (253–257 °F)
 YesY(what is this?)  (verify)

Miprocin (4-hydroxy-N-methyl-N-isopropyltryptamine, 4-Hydroxy-MiPT) is an aromatic compound and a lesser-known psychedelic drug from the tryptamine family. Miprocin is part of the class of drugs known as serotonergic psychedelics (which includes magic mushrooms, LSD and mescaline), and its effects and molecular structure resemble that of the tryptamine psilocin. To date, there have been no reports of deaths from 4-HO-MiPT.



4-HO-MiPT was first synthesized by Alexander Shulgin. In his book TIHKAL (Tryptamines I Have Known and Loved). 4-HO-MiPT is a synthetic psychedelic considered similar in activity to psilocin. It is relatively uncommon and has only a short history of human use.


Miprocin is the 4-hydroxyl analog of the chemical N-Methyl-N-isopropyltryptamine as well as the structural analog of 4-HO-DMT.


Miprocin is a serotonergic. Its method of action comes from its partial agonist activity at 5-HT2A serotonin receptors and serotonin neurotransmitters located in the prefrontal cortex in the human brain.


Very little is known about the overrall toxicity of Miprocin. The chemicial structure of it is very similar to Psilocin and it isn't known to be associated with compulsive use and physical dependence however, this being a research chemical and because its use is so uncommon, it should therfore be considered & treated like an experimental chemical. Although some people are willing to ingest these chemicals for their effects, it is not reasonable to assume that these chemicals are in any way 'safe' to use recreationally.


Miprocin (Fumarate) Oral Dose
Threshold 5 mg-10 mg
Light 9 mg-14 mg
Common 12 mg-20 mg
Strong 18 mg-30 mg
Heavy 25 mg+
Onset After Effects
15 - 45 minutes (depending on stomach contents) 1 - 4 hours


Erowid & BlueLight.ru reports the following effects:[1][2]


  • Psilocybin-like Open & Closed-eye visuals
  • Creative or abstract thinking
  • Increased giggling and laughing
  • Out of body experience, light disassociation (if desired)
  • Mood lift, euphoria
  • Intensification of tactile sensations, smell, etc
  • Increased appetite
  • Heighten sexual interest
  • Diminished aggression, hostility, and jealousy
  • Diminished fear, anxiety, and insecurity
  • Substantial enhancement of the appreciation for quality of music


  • Sedation
  • Mydriasis
  • Colour alteration
  • Time perception alteration
  • Synesthesia
  • Feelings of body twitching
  • General change in consciousness
  • Auditory distortions, pitch shifts
  • Visual distortions, open and closed-eye patterning, movement trails, shifting colors

Side Effects

  • Body tremors
  • Mild vertigo
  • Slight headache / nausea
  • Possible confusion
  • Light-headedness
  • Possible xerostomia
  • May exacerbate latent or existing mental disorders
  • Possible minor jaw-clenching
  • Slight rise in body tempature


The duration is listed as 4-6 hours, although other sources list the duration as 5-8 hours, depending on certain variables (such as metabolism, food interaction).


4-HO-MiPT is a unscheduled drug in the United States. It may be considered an analog of psilocin, in which case could lead to persecution under the Analog Act of the USA.

The substance could also be considered illegal in the UK under the Misuse of Drugs Act 1971.

Miprocin was scheduled as "hälsofarliga varor" (health-threatening substances, having no acceptable medical use) in Sweden on Nov 1, 2005.[3]

See also


External links