Methyl 2-amino-5-nitro-6-(trifluoromethoxy)pyridine-3-carboxylate
6-Bromo-2-hydroxy-4-(trifluoromethoxy)pyridine-3-carbonyl chloride
4-(Difluoromethyl)-3-hydroxy-5-iodopyridine-2-sulfonyl chloride
3-Cyano-2-methoxy-5-nitro-6-(trifluoromethoxy)pyridine