PiHKAL

PIHKAL: A Chemical Love Story
Cover of PIHKAL, 1st ed.
AuthorAlexander and Ann Shulgin
SubjectPharmacology, Autobiography, Psychoactive drugs
PublisherTransform Press
Publication date
1991
Publication placeUnited States
Media typePaperback
ISBN0-9630096-0-5
OCLC269100404
Followed byTiHKAL 

PiHKAL: A Chemical Love Story is a book by Alexander Shulgin and Ann Shulgin, published in 1991. The subject of the work is psychoactive phenethylamine chemical derivatives, notably those that act as psychedelics and/or empathogen-entactogens. The main title, PiHKAL, is an acronym that stands for "Phenethylamines I Have Known and Loved".

The book is arranged into two parts, the first part being a fictionalized autobiography of the couple and the second part describing 179 different psychedelic compounds (most of which Shulgin discovered himself), including detailed synthesis instructions, bioassays, dosages, and other commentary.

The second part was made freely available by Shulgin on Erowid while the first part is available only in the printed text. While the reactions described are beyond the ability of people with a basic chemistry education, some tend to emphasize techniques that do not require difficult-to-obtain chemicals. Notable among these are the use of mercury-aluminum amalgam (an unusual but easy to obtain reagent) as a reducing agent and detailed suggestions on legal plant sources of important drug precursors such as safrole.