Methyl 4-(chloromethyl)-3-(difluoromethyl)-5-methylpyridine-2-carboxylate
Methyl 5-(chloromethyl)-3-(difluoromethyl)-4-methylpyridine-2-carboxylate
Methyl 3-(chloromethyl)-5-(difluoromethyl)-4-methylpyridine-2-carboxylate
Methyl 3-(chloromethyl)-5-(difluoromethyl)-2-methylpyridine-6-carboxylate