4-Iodo-2-nitro-3-(trifluoromethoxy)pyridine-5-sulfonyl chloride
5-Iodo-3-nitro-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
3-Methoxy-2-methyl-5-(trifluoromethoxy)pyridine-6-acetic acid
3-Iodo-5-nitro-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride