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