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