3-(Difluoromethyl)-6-fluoropyridine-2-acetic acid
4-(Difluoromethyl)-5-fluoropyridine-2-acetic acid
3-(Difluoromethyl)-4-fluoro-5-(trifluoromethyl)pyridine
2-(Difluoromethyl)-5-fluoro-4-(trifluoromethyl)pyridine
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