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