Tags: Chemical Compound, Chemical Substance.
4-HO-pyr-T or 4-hydroxy-NN-tetramethylenetryptamine is a lesser-known psychedelic drug. It is the 4-hydroxyl analog of pyr-T. 4-HO-pyr-T was first synthesized by Alexander Shulgin. In his book TiHKAL (Tryptamines I Have Known and Loved) neither the dosage nor the duration are known. 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.
