6-Chloro-4-fluoro-3-(trifluoromethoxy)pyridine-2-sulfonamide
4-(Difluoromethyl)-3-methoxy-5-nitropyridine-2-sulfonyl chloride
Ethyl 2,6-dibromo-4-(trifluoromethoxy)pyridine-3-carboxylate
2-(Difluoromethyl)-5-hydroxy-3-iodopyridine-6-carbonyl chloride