5-Amino-3-(difluoromethyl)-4-iodo-2-nitropyridine
3-Cyano-6-(difluoromethyl)-4-hydroxypyridine-2-sulfonyl chloride
3-Cyano-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-carboxylic acid
2-Amino-3-hydroxy-6-(trifluoromethoxy)pyridine-5-sulfonamide