Chalapathi Institute of Engineering and Technology;
Department of chemistry;
Guntur;
India;
Department of Chemistry;
Acharya Nagarjuna University;
Guntur;
India;
RA Chem Pharma Limited;
R&D Division;
Prasanth Nagar;
Hyderabad;
India;
Benzimidazole; Derivatives; O-Phynelyenediamine; Substituted; Aldehydes; Zinc; Triflate;