4-25-00-01672 (Beilstein Handbook Reference) 4H-Pyrido(1,2-a)pyrimidine-3-carboxylic acid, 7-methyl-4-oxo-, ethyl ester 5435-82-5 AI3-16694 BRN 0200181 Ethyl 7-methyl-4-oxo-4H-pyrido(1,2-a)pyrimidine-3-carboxylate NSC 21506