PiHKAL · info home
Browse the short index of PiHKAL phenethylamines. Read book II of PiHKAL.
Search for phenethylamines and related structures. Beyond PiHKAL—selected works by Sasha and others. Explore phenethylamine structures and analogues.
Essential oils and related amphetamines Log of changes made to this site and differences from the printed version.
TiHKAL · info home
Dear reader: PiHKAL • info, now well into its 2nd decade, is having a mid-life crisis. It has become surly, uncooperative and stubborn despite all my threats, shouting, and jumping about. Teenagers!

Right then, off to Bootstrap-camp with it! To shape up and become responsive! Still, this process of… iterative refinement may take some time. Thank you for your patience while PiHKAL • info unlearns what it has learned. · Comments or suggestions are always welcome.

Cover of PiHKAL: A Chemical Love Story. 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 skeletonAll 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.

Alexander “Sasha” Shulgin passed away June 2, 2014 at 5 pm. More at the Erowid Alexander Shulgin Vault.
30 April 2016 · Creative Commons BY-NC-SA ·


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.

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PiHKAL · info Statistics

3672 Total
2654 Phenethylamine
652 Tryptamine
114 Lysergamide
89 Other
77 β-Carboline
58 Isoquinoline
28 Undefined