Spectrophotometric Determination and Biological Activity Study of Zn(II) using a Newly Synthesized Azo Reagent Derivative from 4,5-bis(4-methoxyphenyl) Imidazole . Mal. J. Fund. Appl. Sci. 2024;20(1):214-222. doi:10.11113/mjfas.v20n1.3251