Fig. 1. The general chemical structure of (A) tryptamine with marked substitution sites, (B) serotonin, and the novel synthetic tryptamine analogs, (C) pyrrolidino tryptamine hydrochloride (PYT HCl), (D) piperidino tryptamine hydrochloride (PIT HCl), (E) N,N-dibutyl tryptamine hydrochloride (DBT HCl) which are produced by the addition of a cyclopentane, cyclohexane, and two butyl groups to the terminal nitrogen atom attached to R1/R2 instead of the hydrogen, and (F) 2-methyl tryptamine hydrochloride (2-MT HCl) which has a 2-methyl in the indole ring.
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