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