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Class Information
Number: 549/501
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.) > The hetero ring is five-membered > Chalcogen attached indirectly to the hetero ring by nonionic bonding > The chalcogen, x, is in a -c(=x)- group > The -c(=x)- is part of a -c(=x)x- group, wherein the x's are the same or diverse chalcogens > Additional chalcogen attached indirectly to the hetero ring by nonionic bonding
Description: Compounds wherein an additional chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the hetero ring by nonionic bonding.
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