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