2-(5-Bromopentyl)-4-chloro-5-[2-(4-methoxyphenyl)ethylamino]pyridazin-3(2H)-one

Abstract

The asymmetric unit of the title compound, C18H23BrClN3O2, consists of two molecules which exhibit different conformations of the pentyl chains [C—C—C—C torsion angles of −60.4 (4) and 175.8 (3)°]. The crysal packing exhibits a chain structure, generated through the O atom of the pyridazinone forming a hydrogen bond with the N—H group of an adjacent molecule.