2,3-Dimethoxy-5-nitro-4-(trifluoromethoxy)pyridine
3,5-Dimethoxy-4-iodo-2-(trifluoromethoxy)pyridine
4,5-Dimethoxy-2-iodo-3-(trifluoromethoxy)pyridine
3,6-Dimethoxy-2-iodo-5-(trifluoromethoxy)pyridine
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