2,4-Difluorobenzoyl hydrazine (CAS No.118737-62-5), its synonyms are 2,4-Difluorobenzohydrazide ; Benzoic acid, 2,4-difluoro-, hydrazide ; 2,4-Difluorobenzhydrazide ; 2,4-Difluorobenzoic acidhydrazide .