3-(Difluoromethyl)-2-hydroxy-6-nitropyridine-5-sulfonyl chloride
3-(Difluoromethyl)-2-hydroxy-4-methylpyridine-6-acetic acid
6-(Difluoromethyl)-2-hydroxy-3-nitropyridine-4-sulfonyl chloride
2-(Difluoromethyl)-3-hydroxy-4-methylpyridine-6-acetic acid
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