5-(Aminomethyl)-3-cyano-4-hydroxy-2-(trifluoromethoxy)pyridine
4-Chloro-2-hydroxy-5-nitro-3-(trifluoromethoxy)pyridine
2-Chloro-6-hydroxy-4-nitro-3-(trifluoromethoxy)pyridine
6-Chloro-4-hydroxy-2-nitro-3-(trifluoromethoxy)pyridine
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