Study of methylation reactions of 2-phenylquinazoline-4-tion with “soft” and “hard” methylation agents and determination of its biological activityB Sapaev, F.E Saitkulov, A.A Tashniyazov and OU NormurodovE3S Web Conf., 258 (2021) 04023DOI: https://doi.org/10.1051/e3sconf/202125804023