Synonyms:
5-dichloro-6-pyridazone ; 1-phenyl-4,5-dichloro-5-pyridazone ; aurora ka-446 ; 1-phenyl-4,5-dichloro-6-pyridazine ; otava-bb bb0128630037 ; 1-phenyl-4,5-dichloro-6-pyridazone ; 1-fenyl-4,5-dichlor-6-pyridazinon ; 1-phenyl-4 ; akos b029234 ; ,5-dichloro-1-phenyl-6-pyridazone.