1. 1) China Pharmacopoeia Committee, “Chinese Pharmacopoeia,” 1st Div., China Chemical Industry Press, Beijing, 2005, p. 142.
2. 2) Peng J. Y., Fan G. R., Wu Y. T., J. Chromatogr. A, 1091, 89—93 (2005).
3. 3) Xiao S. S., Jin Y., Sun Y. Q., J. Shenyang Pharm. Univ., 20, 455—458 (2003).
4. 4) Tang J., Shi C. Y., Xu H., Chin. Hosp. Pharm. J., 23, 327—328 (2003).
5. 5) Liu Y. H., Wu X. Y., Fang J. G., Xie W., Central South Pharm., 1, 302—305 (2003).