4-AcO-MiPT, which stands for 4-acetoxy-N-methyl-N-isopropyltryptamine or myricetin, belongs to the category of psychedelic tryptamines. It shares close chemical similarities with compounds like O-acetyl psilocin and MiPT.
Unfortunately, scant information is available regarding the human pharmacology or potential toxicity of 4-AcO-MiPT. Nevertheless, analytical techniques have been established for its detection and identification.

CAS Number1024612-25-6 
3D model (JSmol)Interactive image
CompTox Dashboard(EPA)DTXSID70676236
Chemical formulaC16H22N2O2
Molar mass274.364 g·mol−1

Drug prohibition laws

In Sweden, the Health Ministry of the Swedish Parliament, known as the Sveriges riksdag, has categorized 4-AcO-MiPT as a “health hazard” under the Act on the Prohibition of Certain Goods Dangerous to Health, also known as Lagen om förbud mot vissa hälsofarliga varor. This classification was made effective on November 1, 2005, through their regulation SFS 2005:733, where it is listed explicitly as 4-acetoxy-N, N-metylisopropyltryptamin (4-AcO-MIPT). Consequently, the sale and possession of this substance have been rendered illegal in Sweden.


  • What is 4-Acetoxy-MiPT?
  • 4-Acetoxy-N-methyl-N-isopropyltryptamine, commonly called 4-AcO-MiPT or mipracetin, is a psychedelic tryptamine compound known for its psychoactive effects.
  • How is 4-Acetoxy-MiPT related to other substances?
  • 4-Acetoxy-MiPT is chemically related to other compounds like O-acetyl psilocin and MiPT, sharing similarities in their chemical structures.
  • What is the legal status of 4-Acetoxy-MiPT in Sweden?
  • In Sweden, 4-Acetoxy-MiPT has been classified as a “health hazard” under the Act on the Prohibition of Certain Goods Dangerous to Health (Lagen om förbud mot vissa hälsofarliga varor). This classification, regulated under SFS 2005:733 as 4-acetoxy-N, N-metylisopropyltryptamin (4-AcO-MIPT), makes it illegal to sell or possess this substance.
  • Is 4-Acetoxy-MiPT legal in other countries?
  • The legal status of 4-Acetoxy-MiPT can vary significantly from one country to another. It’s essential to research and understand the specific regulations in your location before obtaining or using this substance.
  • What are the reported effects of 4-Acetoxy-MiPT?
  • Anecdotal reports suggest that 4-Acetoxy-MiPT may induce psychedelic effects, including altered perception, visual distortions, and changes in consciousness. However, individual experiences can vary widely.
  • Is 4-Acetoxy-MiPT safe to use?
  • Limited information is available regarding the human pharmacology and potential toxicity of 4-Acetoxy-MiPT. Like with all psychoactive substances, it is crucial to exercise caution, use harm-reduction practices, and be in a safe and controlled environment when experimenting with it.
  • Can 4-Acetoxy-MiPT be used for therapeutic purposes?
  • The therapeutic potential of 4-Acetoxy-MiPT has yet to be extensively studied. Any potential therapeutic use should be conducted under the guidance of a qualified healthcare professional and in a controlled clinical setting.
  • Where can I obtain 4-Acetoxy-MiPT?
  • The availability of 4-Acetoxy-MiPT may vary, and its sale may be subject to legal restrictions in many regions. Obtaining it from unverified sources can be risky, as the quality and purity of the substance may not be guaranteed. It’s essential to exercise caution and seek reputable sources to acquire it.


  1. On February 15, 2009, a significant study was conducted by TAKAHASHI, M; NAGASHIMA, M; SUZUKI, J; SETO, T; YASUDA, I; YOSHIDA, T. They focused on the “Creation and application of a psychoactive designer drugs data library using liquid chromatography with a photodiode array spectrophotometry detector and gas chromatography–mass spectrometry.” This research was published in the journal Talanta, Volume 77, Issue 4, with pages 1245–1272. (DOI: 10.1016/j.talanta.2008.07.062) (PMID: 19084633).
  2. On September 20, 2011, Noorizadeh, Hadi; Farmany, Abbas; Noorizadeh, Mehrab conducted a study titled “Application of GA–KPLS and L–M ANN calculations for the prediction of the capacity factor of hazardous psychoactive designer drugs.” This research was published in Medicinal Chemistry Research, Volume 21, Issue 9, with pages 2680–2688. (DOI: 10.1007/s00044-011-9794-y) (S2CID: 16413083).
  3. In Sweden, changes were made to the regulation governing certain hazardous substances. This alteration is detailed in “Förordning om ändring i förordningen (1999:58) om förbud mot vissa hälsofarliga varor” (Regulation amending the regulation (1999:58) on the prohibition of certain goods hazardous to health). The changes came into effect on October 6, 2005, and the original document is available in Swedish. (Archived from the original (PDF) on June 26, 2021).

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