3-Iodo-2-nitro-6-(trifluoromethoxy)pyridine-4-carboxylic acid
2-Iodo-6-nitro-5-(trifluoromethoxy)pyridine-3-carboxylic acid
2-Iodo-4-methoxy-3-(trifluoromethoxy)pyridine-5-carboxylic acid
6-Iodo-3-nitro-2-(trifluoromethoxy)pyridine-4-carboxylic acid
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