3-Chloro-2-(difluoromethyl)-5-(fluoromethyl)pyridine
2-Chloro-6-(difluoromethyl)-3-(fluoromethyl)pyridine
5-Chloro-2-(chloromethyl)-4-(difluoromethyl)pyridine
4-Chloro-5-(chloromethyl)-2-(difluoromethyl)pyridine
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