6-Hydroxy-3-nitro-2-(trifluoromethyl)pyridine
4-Hydroxy-2-nitro-3-(trifluoromethyl)pyridine
3-Hydroxy-4-nitro-5-(trifluoromethyl)pyridine
5-Hydroxy-4-nitro-2-(trifluoromethyl)pyridine
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