To, D.C., Tran, M.H., Nguyen, P.H., Ai Nhung, N.T. and Nguyen, T.T.T. 2023. Arginase II Inhibitory Activity of Phenolic Compounds from Caesalpinia sappan L.: http://www.doi.org/10.26538/tjnpr/v7i4.12. Tropical Journal of Natural Product Research (TJNPR). 7, 4 (May 2023), 2744–2748.