3-Bromo-2-(difluoromethyl)pyridine-4-carboxylic acid
5-(Difluoromethyl)-2-nitro-4-(trifluoromethyl)pyridine
2-Bromo-6-(difluoromethyl)pyridine-3-carboxylic acid
4-(Difluoromethyl)-2-nitro-5-(trifluoromethyl)pyridine
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