4-(Difluoromethyl)-6-nitro-3-(trifluoromethyl)pyridine-2-acetic acid
4-(Difluoromethyl)-2-nitro-3-(trifluoromethyl)pyridine-6-acetic acid
5-(Difluoromethyl)-3-nitro-2-(trifluoromethyl)pyridine-4-acetic acid
Ethyl 3-(difluoromethyl)-6-nitro-2-(trifluoromethyl)pyridine-5-carboxylate