3-(Difluoromethyl)-2-hydroxy-6-(trifluoromethoxy)pyridine-5-acetic acid
2-(Difluoromethyl)-5-hydroxy-6-(trifluoromethoxy)pyridine-3-acetic acid
Methyl 4-hydroxy-3-nitro-2-(trifluoromethoxy)pyridine-5-acetate
Methyl 4-hydroxy-2-nitro-3-(trifluoromethoxy)pyridine-5-acetate