Phytocannabinoids and Other Cannabinoids
The Cannabis plant and its products consist of an enormous variety of chemicals.

The Compounds in Cannabis
Some of the 483 compounds identified are unique to Cannabis, for example, the
more than 60 cannabinoids, whereas the terpenes, with about 140 members forming
the most abundant class, are widespread in the plant kingdom. The term “cannabinoids”
represents a group of C21 terpenophenolic compounds found until now uniquely
in Cannabis sativa L. (1). As a consequence of the development of synthetic cannabinoids
(e.g., nabilone [2], HU-211 [dexanabinol; ref. {3}, or ajulemic acid [CT-3; ref.
4]) and the discovery of the chemically different endogenous cannabinoid receptor
ligands (“endocannabinoids,” e.g., anandamide, 2-arachidonoylglycerol) (5,6), the term
“phytocannabinoids” was proposed for these particular Cannabis constituents (7).
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