3-Chloro-4-methoxy-2-(trifluoromethoxy)pyridine-5-sulfonyl chloride
3-Chloro-2-methoxy-5-(trifluoromethoxy)pyridine-6-sulfonyl chloride
6-Chloro-2-methoxy-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Chloro-5-methoxy-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride