3-(Difluoromethyl)-2-methoxy-5-nitropyridine-6-sulfonyl chloride
4-Amino-2-(chloromethyl)-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine
4-(Bromomethyl)-2-(difluoromethyl)-3-hydroxy-6-iodopyridine
2-Chloro-3-methyl-5-(trifluoromethoxy)pyridine-4-sulfonyl chloride