Cover of PiHKAL: A Chemical Love Story, by Alexander & Ann Shulgin. Cover art by Pamela Engebretson PiHKAL • info is a visual index and map of “PiHKAL: A Chemical Love Story,” by Alexander & Ann Shulgin. PiHKAL is the extraordinary record of the authors’ years exploring the chemistry and transformative power of psychedelic drugs, and phenethylamines in particular.

PiHKAL (the book) covers a lot of ground. There are detailed reports on 179 substances, and mention of perhaps 150 more. Still other phenethylamines, not discussed in the book, are known or are suspected to have psychedelic potential. PiHKAL • info is my attempt to map out the terrain.

Numbering of the Phenethylamine skeleton All phenethylamines on this website are drawn with the ring locants arranged clockwise, shown at left. This is sometimes at odds with the practice followed in PiHKAL.

Coming soon: The Shulgin Index, vol 1. Psychedelic Phenethylamines and Related Compounds, from Transform Press. While you’re waiting, have a look at Dirty Pictures, a hot new doc about the man and his work.

phen-ethyl-amine \fen-'eth-al-a-,mēn\ n. [phenyl fr. F. phène, fr. Gk. phainein, to show (from its occurrence in illuminating gas) + ethyl (ether + yl) + amine fr. NL ammonia] 1: A naturally occurring compound found in both the animal and plant kingdoms. It is an endogenous component of the human brain. 2: Any of a series of compounds containing the phenethylamine skeleton, and modified by chemical constituents at appropriate positions in the molecule.

From PiHKAL

PiHKAL • info Statistics

1001	Total
695	Phenethylamine
161	Tryptamine
36	β-Carboline
58	Lysergamide
28	Isoquinoline
23	Other