Osarumwense , P.O. 2020. Synthesis and antibacterial activity of newly synthesized 7-chloro–2–methyl-4h–benzo[d] [1, 3]–oxazin–4–one and 3–amino-7-chloro-2–methyl-quinazolin-4(3h)–one. GSC Biological and Pharmaceutical Sciences. 11, 1 (Apr. 2020), 212–220. DOI:https://doi.org/10.30574/gscbps.2020.11.1.0110.