Ethyl 2-amino-5-(difluoromethyl)-3-fluoropyridine-4-carboxylate
5-Amino-4-(difluoromethyl)-3-fluoropyridine-2-acetic acid
2-Amino-6-chloro-3-(difluoromethyl)-5-iodopyridine
6-Amino-3-chloro-2-(difluoromethyl)-4-iodopyridine
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