Narwanti I, Abdillah FH. Synthesis of 4-Hydroxycinnamic Acid from Malonic Acid and 4-Hydroxybenzaldehyde as Starting Materials with the Variation of the Reflux Time. Borneo J Pharm [Internet]. 2026Mar.27 [cited 2026Mar.27];9(1). Available from: https://journal.umpr.ac.id/index.php/bjop/article/view/9356