6-(Difluoromethyl)-2-nitro-3-(trifluoromethyl)pyridine-4-acetic acid
6-(Difluoromethyl)-2-nitro-4-(trifluoromethyl)pyridine-3-acetic acid
2-(Difluoromethyl)-6-nitro-3-(trifluoromethyl)pyridine-5-acetic acid
5-Nitro-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-4-carboxaldehyde