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