Ethyl 4-(difluoromethyl)-5-(trifluoromethyl)pyridine-2-carboxylate
4-(Bromomethyl)-2-(difluoromethyl)pyridine-5-carboxylic acid
Ethyl 4-(difluoromethyl)-2-(trifluoromethyl)pyridine-6-carboxylate
3-(Bromomethyl)-4-(difluoromethyl)pyridine-5-carboxylic acid