Patent ID: 8022073

Claim:
A pyridazine compound of the formula (1): (wherein, R 1 represents a chlorine atom, bromine atom, C1-C4 alkyl group or C1-C4 alkoxy group, R 2 represents a C1-C4 alkyl group, R 3 represents a halogen atom, nitro group, cyano group, C1-C4 alkyl group optionally substituted with at least one halogen atom, C1-C4 alkoxy group optionally substituted with at least one halogen atom or C1-C4 alkylthio group optionally substituted with at least one halogen atom, m represents an integer of 0 to 5, and when m is an integer of 2 or more, R 3 s are mutually the same or different, Q represents a 5-membered aromatic heterocyclic group having at least one hetero atom selected from the group consisting of a nitrogen atom, oxygen atom and sulfur atom, as a ring constituent atom, and the aromatic heterocyclic group is optionally substituted with a substituent selected from the group consisting of halogen atoms, nitro group, cyano group, C1-C4 alkyl groups optionally substituted with at least one halogen atom and C1-C4 alkoxy groups optionally substituted with at least one halogen atom).