2020. Isolation and Elucidation Structure of 28-Hydroxy-3-Friedelanone of Nyamplung (Callophyllum inophyllum, Linn.) Leaves. The Journal of Pure and Applied Chemistry Research. 9, 2 (Aug. 2020), 117–125. DOI:https://doi.org/10.21776/ub.jpacr.2020.009.02.518.