Ethyl 2-methoxy-6-nitro-3-(trifluoromethoxy)pyridine-5-carboxylate
2-Methoxy-4-nitro-6-(trifluoromethoxy)pyridine-3-sulfonyl chloride
Ethyl 2-methoxy-5-nitro-3-(trifluoromethoxy)pyridine-6-carboxylate
2-Methoxy-3-nitro-4-(trifluoromethoxy)pyridine-6-sulfonyl chloride