3-Amino-4-nitro-2-(trifluoromethoxy)pyridine-5-sulfonyl chloride
3-(Difluoromethyl)-5-iodo-6-nitropyridine-2-carboxylic acid
3-Bromo-2-(difluoromethyl)-4-methoxy-5-methylpyridine
2-(Difluoromethyl)-4-hydroxy-6-iodopyridine-3-acetic acid
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