3-Nitro-2-(trifluoromethoxy)pyridine-5-carboxylic acid
2-(Fluoromethyl)-5-hydroxy-4-(trifluoromethoxy)pyridine
4-Nitro-5-(trifluoromethoxy)pyridine-2-acetic acid
2-(Fluoromethyl)-4-hydroxy-5-(trifluoromethoxy)pyridine
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