2-(Difluoromethyl)-3,5-dimethoxypyridine-4-carboxylic acid
Ethyl 4-(difluoromethyl)-2-(trifluoromethyl)pyridine-3-carboxylate
5-(Difluoromethyl)-3,4-dimethoxypyridine-2-carboxylic acid
Ethyl 3-(difluoromethyl)-5-(trifluoromethyl)pyridine-2-carboxylate