4-HO-pyr-T (4-hydroxy-''N'',''N''-tetramethylenetryptamine) is a lesser-known

psychedelic drug Psychedelics are a subclass of hallucinogenic drugs whose primary effect is to trigger non-ordinary states of consciousness (known as psychedelic experiences or "trips").Pollan, Michael (2018). ''How to Change Your Mind: What the New Science o ...

. It is the 4-

hydroxyl In chemistry, a hydroxy or hydroxyl group is a functional group with the chemical formula and composed of one oxygen atom covalently bonded to one hydrogen atom. In organic chemistry, alcohols and carboxylic acids contain one or more hydroxy ...

analog of pyr-T. 4-HO-pyr-T was first synthesized by

Alexander Shulgin Alexander Theodore "Sasha" Shulgin (June 17, 1925 – June 2, 2014) was an American medicinal chemist, biochemist, organic chemist, pharmacologist, psychopharmacologist, and author. He is credited with introducing 3,4-methylenedioxymethamph ...

. In his book ''

TiHKAL ''TIHKAL: The Continuation'' is a 1997 book written by Alexander Shulgin and Ann Shulgin about a family of psychoactive drugs known as tryptamines. A sequel to '' PIHKAL: A Chemical Love Story'', ''TIHKAL'' is an acronym that stands for "Tryp ...

'' (''Tryptamines I Have Known and Loved''), neither the dosage nor the duration are reported. 4-HO-pyr-T produces few to no effects. Very little data exists about the pharmacological properties, metabolism, and toxicity of 4-HO-pyr-T.

References

Tryptamines Pyrrolidines {{Psychoactive-stub