1958 Volume 6 Issue 4 Pages 397-400
From the seeds of Cassia obtusifolia L. (Leguminosae), a new anthraquinone pigment, obtusifolin, m.p. 237∼238°, was isolated along with chrysophanol and physcion. The structure of obtusifolin was established as 1-methoxy-2, 8-dihydroxy-3-methylanthraquinone.