2-Phenyl-5-benzimidazolesulfonic acid was used for the fabrication of biomimetic sensor for determination of 4-methylbenzylidene camphor (4-MBC), an ultraviolet (UV) radiation protector.;2-Phenyl-5-benzimidazolesulfonic acid was used for the fabrication of biomimetic sensor for determination of 4-methylbenzylidene camphor (4-MBC), an ultraviolet (UV) radiation protector.