3-Cyano-2-iodo-5-nitro-6-(trifluoromethoxy)pyridine
2-Chloro-5-(chloromethyl)-4-nitro-3-(trifluoromethoxy)pyridine
6-Chloro-4-(chloromethyl)-2-nitro-3-(trifluoromethoxy)pyridine
3-Chloro-5-hydroxy-2-(trifluoromethoxy)pyridine-6-acetic acid
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