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