35712-88-0 4H-Pyrido(1,2-a)pyrimidinium, 6,7,8,9-tetrahydro-3-(ethoxycarbonyl)-1-ethyl-6-methyl-4-oxo- 6,7,8,9-Tetrahydro-3-(ethoxycarbonyl)-1-ethyl-6-methyl-4-oxo-4H-pyrido(1,2-a)pyrimidinium BRN 4153224 MZ-143