Asaruddin, M.R., Ezekiel, S., Ariffeen, M.F. and Affan, M.A. 1. Synthesis and Spectral Characterization of 4-Hydroxy-3- Methoxybenzaldehyde Derivatives. Borneo Journal of Resource Science and Technology. 5, 1 (1), 43-48. DOI:https://doi.org/10.33736/bjrst.283.2015.