PiHKAL

PIHKAL is a book by Alexander and Ann Shulgin. The title is an acronym for Phenethylamines I Have Known And Loved (English: Phenylethylamine, which I knew and loved ).

The book consists of two parts. The first part deals with biographical aspects of both authors. Gatherings of Friends are portrayed, are tested at the new psychoactive substances in self- test under scientific conditions. The second part can be regarded as a scientific publication in which 179 psychoactive phenethylamines are described systematically, and indeed to their synthesis and the experience reports ( the group members) at different jet strengths. In contrast to the first part of the passages on the chemistry can be understood only with professionals experienced in the second part, the latter was declared by the authors as public domain.

From the same authors, there is the continuation Tihkal.