6-Amino-2-chloro-4-(difluoromethyl)pyridine-3-acetic acid
6-Amino-2-bromo-4-cyano-3-(difluoromethyl)pyridine
6-Amino-3-chloro-4-(difluoromethyl)pyridine-2-carboxylic acid
2-Amino-5-chloro-3-(difluoromethyl)pyridine-4-carboxylic acid
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