Ethyl 3,5-dibromo-2-(trifluoromethoxy)pyridine-6-carboxylate
4-(Chloromethyl)-5-methyl-3-(trifluoromethoxy)pyridine-2-carboxylic acid
Ethyl 3,4-dibromo-6-(trifluoromethoxy)pyridine-2-carboxylate
4-(Chloromethyl)-3-methyl-2-(trifluoromethoxy)pyridine-5-carboxylic acid