英文别名
1,3,4,6-Tetramethyl-1,5,6,7-tetrahydropyrimido<4,5-c>-5,7-pyridazindion;1,3,4,6-tetramethyl-1H-pyrimido[4,5-c]pyridazine-5,7-dione;Pyrimido[4,5-c]pyridazine-5,7(1H,6H)-dione, 1,3,4,6-tetramethyl-;1,3,4,6-tetramethylpyrimido[4,5-c]pyridazine-5,7-dione