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Class Information
Number: 546/54
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) > Hetero ring is six-membered consisting of one nitrogen and five carbons > Polycyclo ring system having the six-membered hetero ring as one of the cyclos > Pentacyclo ring system having the six-membered hetero ring as one of the cyclos > Plural ring hetero atoms in the pentacyclo ring system > Two ring nitrogens in the pentacyclo ring system (e.g., quinacridones, etc.) > Ring nitrogen is shared by two of the cyclos (e.g., yohimbanes, etc.) > Having -c(=x)-, wherein x is chalcogen, bonded directly to ring carbon of the pentacyclo ring system and also bonded directly to chalcogen or nitrogen > Plural chalcogens bonded directly to the same cyclo as is the -(c=x)- group
Description: Compounds wherein at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are bonded directly to the same cyclo as is the group.

Sub-classes under this class:

Class Number Class Name Patents
546/55 Trialkoxybenzoyl bonded directly to at least one of the chalcogens (e.g., reserpine, etc.) 6

Patents under this class:

Patent Number Title Of Patent Date Issued
5441956 Hydroisoquinoline derivatives Aug. 15, 1995
5416089 Polycyclic and heterocyclic chromophores for bis-imide tumoricidals May. 16, 1995
3978065 Reserpine derivatives Aug. 31, 1976
3974164 Reserpic acid derivatives Aug. 10, 1976

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