Psychedelic Research Chemicals or RC Chems are new synthetic substances which are structurally similar to the original drug, while being functional analogs. Data on their effects limited due as they’re fairly new and do not have a lot of human consumption history.

Psychedelics are substances (natural or laboratory made) which cause profound changes in a one’s perceptions of reality. While under the influence of hallucinogens, users might hallcuniate visually and auditorily.

This is an Experimental Substance with little data. This is most likely because the substance is is not very old. Information is limite and incomplete.

Disclaimer: Psychedelic drugs offer some of the most powerful and intense psychological experiences. Additionally these substances are illegal in many places. We understand that even though these substances are illegal, their use occurs frequently. We do not condone breaking of the law. By providing accurate information about these substances, we encourage the user to make responsible decisions and practice harm reduction.

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EPT Also known as:

  • 1H-Indole-3-ethanamine, N-ethyl-N-propyl-[ACD/Index Name]
  • N-Ethyl-N-[2-(1H-indol-3-yl)ethyl]-1-propanamin[German][ACD/IUPAC Name]
  • N-Ethyl-N-[2-(1H-indol-3-yl)ethyl]-1-propanamine[ACD/IUPAC Name]
  • N-Éthyl-N-[2-(1H-indol-3-yl)éthyl]-1-propanamine[French][ACD/IUPAC Name]
  • EPT
  • N-ethyl-N-propyl-1H-indole-3-ethanamine

Ethylpropyltryptamine a novel tryptamine, that is the structural homologue of DMT.


EPT is chemically related to DMT and belongs to a series of psychedelic compounds known as unsubstituted tryptamines. The original synthesis date of EPT is unknown. It first appeared for sale on the online research chemical market in 2016.

Unlike most research chemicals, EPT has no documentation in the scientific literature. It appears to be an entirely novel product of clandestine drug design. Initial reports describe the effects of EPT as mild and indistinct compared to structurally similar base tryptamines such as DMT, DET and DPT, all of which are highly powerful psychedelics.

Of these, it is reported to be most similar to DPT, albeit less potent and with a less immersive headspace. Virtually no data exists about the pharmacological properties, metabolism, and toxicity of EPT. It is highly advised to use harm reduction practices if using this substance.


Tryptamines share a core structure comprised of a bicyclic indole heterocycle attached at R3 to an amino group via an ethyl side chain.

EPT features one propyl and one ethyl groups bound to the terminal amine RN of its tryptamine backbone. EPT is the N-ethyl analog of DPT and the N-propyl analog of DET.

It is also an analog of 4-HO-EPT and [4-AcO-EPT]].

Common NameN-Ethyl-N-[2-(1H-indol-3-yl)ethyl]-1-propanamine
Systematic nameN-Ethyl-N-[2-(1H-indol-3-yl)ethyl]-1-propanamine
Std. InChiInChI=1S/C13H20O/c1-2-3-4-5-6-7-12-8-10-13(14)11-9-12/h8-11,14H,2-7H2,1H3
Avg. Mass230.3486 Da
Molecular Weight230.3486
Monoisotopic Mass230.178299 Da
Nominal Mass230
ChemSpider ID81407759

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Dose Chart


Duration Chart

Onset20-60 minutes
Duration2-4 hours
After-effects1-6 hours

Legal Status

Due to its relative obscurity, the possession and sale of EPT is unscheduled in most countries.

  • Germany: EPT is controlled under the NpSG (New Psychoactive Substances Act) as of July 18, 2019. Production and import with the aim to place it on the market, administration to another person and trading is punishable. Possession is illegal but not penalized.
  • United Kingdom: EPT is a Class A controlled substance in the United Kingdom as a result of the tryptamine catch-all clause.
  • United States: EPT is unscheduled in the United States. It may be considered an analogue of DMT, which is a Schedule I compound under the Controlled Substances Act. As such, the sale for human consumption or the use for illicit non-medical or industrial intents and purposes could be prosecuted as crimes under the Federal Analogue Act.
  • Sources


    1. "Anlage NpSG" (in German). Bundesministerium der Justiz und für Verbraucherschutz [Federal Ministry of Justice and Consumer Protection]. Retrieved December 10, 2019.
    2. "Verordnung zur Änderung der Anlage des Neue-psychoaktive-Stoffe-Gesetzes und von Anlagen des Betäubungsmittelgesetzes" (PDF). Bundesgesetzblatt Jahrgang 2019 Teil I Nr. 27 (in German). Bundesanzeiger Verlag. July 17, 2019. pp. 1083–1094. Retrieved January 1, 2020.
    3. "§ 4 NpSG" (in German). Bundesministerium der Justiz und für Verbraucherschutz [Federal Ministry of Justice and Consumer Protection]. Retrieved December 10, 2019.
    4. "Part I: Class A Drugs". "Misuse of Drugs Act 1971". UK Government. Retrieved January 7, 2020.


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