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Class Information
Number: 549/254
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen as the only ring hetero atoms (class 540, subclass 1) > Oxygen containing hetero ring (e.g., dioxirane, etc.) > Cyclic anhydrides (i.e., -c(=x)oc(=x)-, wherein the x's are the same or diverse chalcogens, is part of the hetero ring) > The cyclic anhydride is five-membered (e.g., succinic anhydride, etc.) > Halogen attached directly or indirectly to the cyclic anhydride by nonionic bonding
Description: Compounds wherein halogen is attached directly or indirectly to the cyclic anhydride by nonionic bonding.
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