3,3,5,7-Tetramethyl-3H-pyrimido(5,4-c)(1,2,5)oxadiazine-6,8(5H,7H)-dione 3,3,5,7-Tetramethyl-6,8-dioxo-5,6,7,8-tetrahydro-3H-pyrimido-5,4-C-1,2,5-oxadiazine [German] 3120-45-4 3H-Pyrimido(5,4-c)(1,2,5)oxadiazine-6,8(5H,7H)-dione, 3,3,5,7-tetramethyl- BRN 0537663 GD 048