The main target of this paper was to synthesize novel reactive dyes that not only give good dyeing property but also show pharmacological activity ie antimicrobial activity (antibacterial and antifungal). In this regard ten novel monoazo quinazolinone based reactive dyes (7a–j) were made by coupling of diazotised 3-{4-[4-amino-2-nitrobenzyl]-3-nitrophenyl}-7-chloro-2- phenylquinazolin-4 (3H)-one (4) with various p-chloro anilino cyanurated coupling ...