4-Hydroxy-6-nitro-3-(trifluoromethoxy)pyridine-2-acetic acid
Methyl 4-(chloromethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine-6-carboxylate
3-(Difluoromethyl)-6-hydroxy-4-methyl-2-(trifluoromethoxy)pyridine
4-Hydroxy-2-nitro-3-(trifluoromethoxy)pyridine-5-acetic acid