Abdussalam M, Yuda IP, Juniarti J. Transformation of Vanillin into Octahydroxanthene Derivative Using Guanidine Catalyst. Walisongo J. Chem. [Internet]. 2020 Aug. 14 [cited 2025 Nov. 14];3(1):19-24. Available from: https://journal.walisongo.ac.id/index.php/wjc/article/view/6031