©2020 National Information and Documentation Center (NIDOC) N EW phenol formaldehyde resin synthesized from multi steps, the first step converts mefenamic acid to their ester ethyl 2-((2,3-dimethylphenyl) amino) benzoate (T 1 ) by reaction with ethanol catalyzed by sulfuric acid as a catalyzed.The hydrazide derivatives 2-((2,3-dimethylphenyl) amino) benzohydrazide (T 2 ) prepared through the react...