Thiomescaline

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Thiomescaline (TM) is a pair of lesser-known psychedelic drugs with the molecular formula C₁₁H₁₇NO₂S. 3-TM and 4-TM are analogs of mescaline in which an oxygen atom has been replaced with a sulfur atom. They were first synthesized by Alexander Shulgin and described in his book PiHKAL.^[1][2] Very little data exists on the pharmacological properties, metabolism, and toxicity of thiomescaline.^{[citation needed]}