5-Hydroxy-2-nitro-3-(trifluoromethoxy)pyridine-6-acetonitrile
6-Hydroxy-3-iodo-4-(trifluoromethoxy)pyridine-2-acetic acid
4-Hydroxy-3-nitro-6-(trifluoromethoxy)pyridine-2-acetonitrile
2-Hydroxy-5-iodo-3-(trifluoromethoxy)pyridine-4-acetic acid
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