IsoMaculosidine

This alkaloid is very hygroscopic and difficult to obtain crystalline. It occurs in the roots of Dictamnus albus and is somewhat unstable, turning red on exposure to light. Isolation under mild conditions show it to be a true alkaloid and not an artifact.

Gellert et al., Herba Hung., 10, 123 (1971) Storer, Young., Tetrahedron, 29, 1217 (1973)