3,4-Difluoro-2-(trifluoromethoxy)pyridine-5-acetic acid
3-(Difluoromethyl)-2-methyl-4-(trifluoromethoxy)pyridine-5-acetic acid
5-(Chloromethyl)-2-iodo-4-(trifluoromethoxy)pyridine
3,6-Difluoro-4-(trifluoromethoxy)pyridine-2-acetic acid
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