4-HO-DPT: 4-HO-DPT (also known as 4-hydroxy-N,N-dipropyltryptamine and sometimes referred to as Procin) is a psychedelic substance of the tryptamine class. Alexander Shulgin first synthesized 4-HO-DPT and documented it in his book TiHKAL (Tryptamines I Have Known and Loved). It is the 4-hydroxyl ana
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