3(2H)-Pyridazinone, 4-acetyl-5,6-bis(4-chlorophenyl)-2-(2-hydroxyethyl)- 4-Acetyl-2-(2'-hydroxyethyl)-5,6-bis(4-chlorophenyl)-2H-pyridazin-3-one 75319-92-5 BRN 5772263 NSC 351481