3-Amino-2-chloro-4-(difluoromethyl)-6-nitropyridine
2-Amino-5-chloro-3-(difluoromethyl)-4-iodopyridine
2-Amino-6-chloro-5-(difluoromethyl)-3-nitropyridine
6-Amino-4-chloro-3-(difluoromethyl)-2-iodopyridine
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