4-(Difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine-6-acetic acid
Ethyl 4-methyl-6-nitro-3-(trifluoromethoxy)pyridine-2-acetate
3-(Difluoromethyl)-4-nitro-6-(trifluoromethoxy)pyridine-2-acetic acid
Ethyl 2-(difluoromethyl)-4-nitro-3-(trifluoromethoxy)pyridine-6-carboxylate