Marpaung, M.P. 2026. Reaction Kinetics and Conversion Efficiency Analysis of Chemical Precursors in Active Pharmaceutical Ingredient Synthesis: A Data-Driven Approach Based on Organic Compounds (HS Code 29). Chemistry Journal (CJ). 3, 1 (Jun. 2026), 27–40. DOI:https://doi.org/10.70076/cj.v3i1.190.