2-Amino-3-(difluoromethyl)-6-fluoropyridine-4-carboxylic acid
5-Amino-4-bromo-2-(difluoromethyl)pyridine-3-sulfonamide
2-Amino-3-(difluoromethyl)-4-fluoropyridine-6-carboxylic acid
6-Amino-4-bromo-3-(difluoromethyl)pyridine-2-acetic acid
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