Narwanti, I.; Abdillah, F. H. Synthesis of 4-Hydroxycinnamic Acid from Malonic Acid and 4-Hydroxybenzaldehyde As Starting Materials With the Variation of the Reflux Time. Borneo J Pharm 2026, 9 (1), 60-70. https://doi.org/10.33084/bjop.v9i1.9356.