1-Fenyl-4,5-dichlor-6-pyridazinon [Czech] 1698-53-9 2-Phenyl-4,5-dichloro-3-pyridazinone 3(2H)-Pyridazinone, 4,5-dichloro-2-phenyl- 4,5-Dichloro-2,3-dihydro-2-phenylpyridazin-3-one 4,5-Dichloro-2-phenyl-3(2H)-pyridazinone 4,5-Dichloro-2-phenylpyridazin-3-one 5-24-02-00024 (Beilstein Handbook Reference) AI3-18651 BRN 0175852 EINECS 216-917-6 NSC 224369 NSC 642642