2-(Difluoromethyl)-5-nitro-6-(trifluoromethyl)pyridine-3-acetic acid
Methyl 3-(difluoromethyl)-2-nitro-6-(trifluoromethyl)pyridine-5-acetate
6-(Difluoromethyl)-3-nitro-4-(trifluoromethyl)pyridine-2-acetic acid
Methyl 3-(difluoromethyl)-2-nitro-5-(trifluoromethyl)pyridine-6-acetate