Ethyl 4-(difluoromethyl)-6-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 2-(difluoromethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 3-iodo-2-methyl-4-(trifluoromethoxy)pyridine-5-carboxylate
4-Iodo-6-methyl-3-(trifluoromethoxy)pyridine-2-carboxylic acid