Methyl 4-nitro-3-(trifluoromethoxy)pyridine-5-carboxylate
3-(Difluoromethyl)-2-methyl-6-(trifluoromethoxy)pyridine-4-acetic acid
Methyl 3-nitro-2-(trifluoromethoxy)pyridine-5-carboxylate
2-(Difluoromethyl)-6-methyl-3-(trifluoromethoxy)pyridine-5-acetic acid