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