Ethyl 4-(chloromethyl)-2-(difluoromethyl)-3-methoxypyridine-5-carboxylate
2-(Chloromethyl)-3-(difluoromethyl)-6-methoxypyridine-4-carboxylic acid
Ethyl 5-(chloromethyl)-3-(difluoromethyl)-4-methoxypyridine-2-carboxylate
2-(Chloromethyl)-3-(difluoromethyl)-4-methoxypyridine-6-carboxylic acid