Cupric benzoate is the chemical compound derived from the cupric ion and the conjugate base of benzoic acid. Cupric benzoate is used in pyrotechnics to create a blue flame. This substance is harmful if swallowed and may cause respiratory irritation. Cupric benzoate complexes incorporating 2-(4'-thiazolyl)benzimidazole (thiabendazole), 2-(2-pyridyl)benzimidazole and 1,10-phenanthroline had demonstrated anticancer activities.