3-Amino-5-cyano-2-(difluoromethyl)pyridine-4-carboxylic acid
3-Amino-5-bromo-2-(bromomethyl)-4-(difluoromethyl)pyridine
5-Amino-4-cyano-3-(difluoromethyl)pyridine-2-carboxylic acid
5-Amino-4-bromo-3-(bromomethyl)-2-(difluoromethyl)pyridine
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