98489-92-0
→
74557-73-6
6-甲基-3-氧代-2,3-二氢哒嗪-4-羧酸
99903-59-0
4-Pyridazinecarbonitrile, 2,3-dihydro-6-methyl-3-oxo-
N/A
13327-27-0
6-甲基-3(2H)-哒嗪酮