Ethyl 2-hydroxy-4-nitro-6-(trifluoromethoxy)pyridine-3-acetate
3-Iodo-6-methyl-4-(trifluoromethoxy)pyridine-2-carboxylic acid
Ethyl 2-hydroxy-4-nitro-3-(trifluoromethoxy)pyridine-6-acetate
6-(Difluoromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-4-acetic acid