Patent ID: 7569518

Claim:
A pyridazine compound represented by formula (1): wherein, R 1 represents a chlorine atom, a bromine atom or a C1-C4 alkoxy group; R 2 represents a C1-C4 alkyl group; R 3 represents a halogen atom, a nitro group, a cyano group, a C1-C4 alkyl group optionally substituted by at least one halogen atom, a C1-C4 alkoxy group optionally substituted by at least one halogen atom or a C1-C4 alkylthio group optionally substituted by at least one halogen atom; m represents an integer of 0 to 5; provided that, when m represents an integer of 2 or more, each of R 3 s is same or different; R 4 a halogen atom, a nitro group, a cyano group, a C1-C4 alkyl group optionally substituted by at least one halogen atom or a C1-C4 alkoxy group optionally substituted by at least one halogen atom; R 5 represents a halogen atom, a nitro group, a cyano group, a C1-C4 alkyl group optionally substituted by at least one halogen atom or a C1-C4 alkoxy group optionally substituted by at least one halogen atom; n represents an integer of 0 to 4; provided that, when n represents an integer of 2 or more, each of R 5 s is same or different.