A synthesis procedure for benzazolo[3,2-a]quinolinium chloride salts and the inclusion of chloro-substituent, amino-substituent, and nitro-substituent resulting in several compounds wherein said procedures provides an increment in the compounds biological activity. The compounds are further used for intra cellular binding, cytotoxicity on malignant cells through apoptosis activation mediated by mitochondrial damage, cellular organelles binding and damage, DNA fragmentation, marker of bacterial growth, antibacterial activity, cell cycle disruption, and a marker due to the auto-fluorescent properties.