4-Bromo-6-(difluoromethyl)-2-nitropyridine-3-carboxylic acid
3-Chloro-6-(difluoromethyl)-4-fluoro-2-methoxypyridine
5-Bromo-3-(difluoromethyl)-2-nitropyridine-4-carboxylic acid
4-Chloro-2-(difluoromethyl)-3-fluoro-5-methoxypyridine
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