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Ethylisopropyltryptamine: Wikis

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Systematic (IUPAC) name
CAS number  ?
ATC code none
PubChem  ?
Chemical data
Formula C 15H22N2  
Mol. mass 230.36 g/mol
SMILES eMolecules & PubChem
Physical data
Melt. point 71–73 °C (160–163 °F)
Pharmacokinetic data
Bioavailability  ?
Metabolism  ?
Half life  ?
Excretion  ?
Therapeutic considerations
Pregnancy cat.  ?
Legal status
Routes  ?

EIPT is a chemical in the tryptamine family, and produces psychedelic and hallucinogenic effects. It was probably first synthesized by Alexander Shulgin.



EIPT is short for N-ethyl-N-isopropyl-tryptamine. The full chemical name of this structure is N-ethyl-N-[2-(5-methoxy-1H-indol-3-yl)ethyl]propan-2-amine. EIPT is a tryptamine, which all belong to a larger family of compounds known as indolethylamines. EIPT is closely related to the compounds DET and DIPT.


In his book TiHKAL, Alexander Shulgin lists a dosage for EIPT as being 24-40 mg taken orally.


Very little is known about the psychopharmacological properties of EIPT, but reports suggest it produces psychedelic effects that can last 4-6 hours. According to Shulgin, this compound tends to produce nausea, dysphoria, and other unpleasant side-effects. It also lacks the hallucinatory and visual properties usually associated with psychedelic drugs.


There have been no reported deaths or hospitalizations from EIPT, but its safety profile is unknown.


EIPT is unscheduled and uncontrolled in the United States, but possession and sales of EIPT could be prosecuted under the Federal Analog Act because of its structural similarities to DET.

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