3-Bromo-2-(difluoromethyl)pyridine-6-carboxylic acid
5-(Chloromethyl)-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine-2-carboxaldehyde
6-Bromo-3-(difluoromethyl)pyridine-2-carboxylic acid
5-(Chloromethyl)-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-carboxylic acid