Ointment combination of dithranol, salicylic acid & coal tar.

From Psorospermum febrifugum (Clusiaceae); some evidence it alkylates Gua N7 of DNA.

Isolated from the tropical plant Psychotria oleoides; exhibits somatostatin antagonistic activity on growth hormone secretion.

From Psychotria rubra.

An intermediate in the biosynthesis of cerebrosides. It is formed by reaction of sphingosine with UDP-galactose and then itself reacts with fatty acid-Coenzyme A to form the cerebroside.