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Class Information
Number: 540/103
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 > Cyclopentanohydrophenanthrene ring system containing > Hetero ring attached directly to the cyclopentanohydrophenanthrene ring system by nonionic bonding > The hetero ring contains -c(=x)-o-, wherein x is chalcogen, as part of the ring (e.g., lactones, etc.) > Additional chalcogen, cyano, or -c(=x)-, wherein x is chalcogen, bonded directly to the hetero ring
Description: Compounds in which - CN, - -, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium), or additional chalcogen is bonded directly to the hetero ring.
Patents under this class:
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