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