Patent ID: 7301032

Claim:
A 1,2,4-thiadiazole compound represented by the formula (1): wherein, R 1 represents C 3 -C 7 alkynyl optionally substituted with a halogen atom; R 2 represents C 3 -C 8 cycloalkyl, C 5 -C 8 cycloalkenyl or C 7 -C 11 bicycloalkyl, wherein the C 3 -C 8 cycloalkyl, the C 5 -C 8 cycloalkenyl and the C 7 -C 11 bicycloalkyl is optionally substituted with one or more substituents selected from the group consisting of C 1 -C 4 alkyl, a halogen atom and trifluoromethyl; and A 1 represents a single bond, C 1 -C 2 alkylene or C 2 -C 3 alkylidene.