2-Hydroxy-3-nitro-6-(trifluoromethoxy)pyridine-5-sulfonamide
3-(Difluoromethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine-4-carboxylic acid
3-Iodo-2-methoxy-6-methyl-5-(trifluoromethoxy)pyridine
2-Hydroxy-3-nitro-5-(trifluoromethoxy)pyridine-4-sulfonamide