My answer for the moment: "Crystal and
molecular structure of (N,N)-dimethyltryptamine." Falkenberg, Goran. Acta Crystallographica, Section B: Structural Crystallography and Crystal Chemistry 1972 , 28 (10), p.3075 Quote: Abstract The hallucinogenic indolealkyl-amine, N,N-dimethyltryptamine, crystallizes in 2 modifications having ...