4-(Difluoromethyl)-6-nitro-2-(trifluoromethoxy)pyridine-3-carbonyl chloride
3-(Bromomethyl)-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-carboxylic acid
3-(Difluoromethyl)-5-nitro-2-(trifluoromethoxy)pyridine-4-carbonyl chloride
5-(Bromomethyl)-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-3-carboxylic acid