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4-Acetoxy-N-methyl-N-isopropyltryptamine (abbreviated 4-AcO-MiPT and also known as mipracetin) is a synthetic psychedelic tryptamine. It is the acetylated form of 4-HO-MiPT (also known as miprocin) and is a higher homolog of 4-AcO-DMT, 4-AcO-MET and 4-AcO-DET. These substances are commonly hypothesized to act primarily as prodrugs for their respective hydroxylated counterparts (e.g. 4-HO-DMT, 4-HO-MET and 4-HO-DET).

4-AcO-MiPT, or 4-Acetoxy-N-isopropyl-N-methyltryptamine, is a synthetic indole alkaloid molecule of the tryptamine class. Tryptamines share a core structure comprised of a bicylic indole heterocycle attached at R3 to an amino group via an ethyl side chain. 4-AcO-MiPT is substituted at R4 of its indole heterocycle with an acetoxy (AcO) functional group CH3COO−. It also contains isopropyl and methyl chains bound to the terminal amine RN of its tryptamine backbone (MiPT).

4-AcO-MiPT is the N-substituted methisopropyl homologue of 4-HO-DMT (psilocin). 4-AcO-MiPT is the acetate ester analog of MiPT and the N-substituted methisopropyl analog of 4-AcO-DMT.

Like with most psychedelic tryptamines, 4-AcO-MiPT is thought to act principally as a 5-HT2A partial agonist. The psychedelic effects are believed to come from 4-AcO-MiPT's binding efficacy at the 5-HT2A receptors.

In terms of its effects on the physical energy levels of the tripper, 4-AcO-MiPT is considered by most to be relaxing, stoning and mildly sedating. This sense of sedation is often accompanied by uncontrollable yawning.

The "body high" of 4-AcO-MiPT can be described as a pleasurable, warm, soft and all-encompassing tingling sensation. This maintains a consistent presence that steadily rises with the onset and hits its limit once the peak has been reached.

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How to Buy 4-AcO-MiPT

Discover and purchase 4-AcO-MiPT along with a variety of other research chemicals at Shulgin's Lab. We ensure that all our chemicals undergo rigorous third-party lab testing for quality and safety. If you're interested in viewing the HNMR results for 4-AcO-MiPT or any other chemical, feel free to reach out to us via email at

Engaging in Responsible Research with 4-AcO-MiPT

It is essential to engage in responsible research practices. We encourage you to thoroughly read and educate yourself before conducting any research with chemicals. The Psychonaut Wiki offers valuable resources and insights on 4-AcO-MiPT , as does The Third Wave. Always ensure you have a solid understanding of a chemical before proceeding with any research.

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Please note that 4-AcO-MiPT and all other products are intended strictly for research purposes and are not suitable for human consumption.

Store 4-AcO-MiPT in a cool, dry place away from sunlight.

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4-AcO-MiPT stock last updated at: March 2026