3-(Bromomethyl)-5-(difluoromethyl)-6-(trifluoromethoxy)pyridine-2-carboxylic acid
3-(Bromomethyl)-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine-6-carboxylic acid
3-(Bromomethyl)-4-(difluoromethyl)-6-(trifluoromethoxy)pyridine-2-carboxylic acid
4-(Chloromethyl)-2-(difluoromethyl)-5-(trifluoromethoxy)pyridine-3-carbonyl chloride