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