Xu H, Zhou Z H, Yang J S
Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing.
Zhongguo Zhong Yao Za Zhi. 1994 Aug;19(8):485-6, 511.
Two compounds were isolated from the stem of Caesalpinia sappan. Their structures were elucidated on the basis of physical and spectral analysis. They were named as tetraacetylbrazilin and protosappanin A respectively.