英文别名4-CHLORO-3(2H)-PYRIDAZINONE; 5-chloro-1H-pyridazin-6-one; 3(2H)-Pyridazinone,4-chloro-; 4-Chloropyridazin-3(2H)-one; 4-Chloro-3-pyridazone; 4-chloro-2,3-dihydropyridazin-3-one; 4-Chloro-2H-pyridazin-3-one; 4-Chloro-3-pyridazinol; chloropyridazinone; 4-Chlor-3-pyridazon 
