5-Cyano-2-methoxy-3-nitro-4-(trifluoromethoxy)pyridine
3-Amino-2-iodo-4-(trifluoromethoxy)pyridine-6-carbonyl chloride
2-(Difluoromethyl)-6-hydroxy-3-nitropyridine-4-carboxylic acid
3-(3-Fluoro-5-nitrobenzoyl)pyridine
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