Methyl 6-methoxy-2-nitro-3-(trifluoromethoxy)pyridine-4-carboxylate
3-(Difluoromethyl)-5-iodo-2-(trifluoromethoxy)pyridine-4-carboxylic acid
Methyl 2-methoxy-6-nitro-4-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 2-methoxy-5-nitro-6-(trifluoromethoxy)pyridine-3-carboxylate