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