Nonahydroxytriphenic acid is a moiety found in some ellagitannins such as roburin A, B,C and D, castalagin or grandinin.[1]

References

  1. ^ Roburin A, a dimeric ellagitannin from heartwood of Quercus robur. Hervé Du Penhoat, Michon V. M. F., Ohassan A., Shuyun Peng, Scalbert A. and Gage D., Phytochemistry, 1991, vol. 30, no 1, pages 329-332, INIST 19775624