Ethyl 3-hydroxy-2-nitro-4-(trifluoromethoxy)pyridine-6-acetate
5-(Chloromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-4-carboxylic acid
Ethyl 2-hydroxy-6-nitro-5-(trifluoromethoxy)pyridine-3-acetate
3-(Chloromethyl)-5-hydroxy-4-(trifluoromethoxy)pyridine-2-carboxylic acid