Description: 546 organic compounds -- part of the class 532-570 series / 546 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) (1) hetero ring is six-membered consisting of one nitrogen and five carbons (26) polycyclo ring system having the six-membered hetero ring as one of the cyclos (112) bicyclo ring system having the six-membered hetero ring as one of the cyclos (139) isoquinolines (including hydrogenated) (146) having -c(=x)-, wherein x is chalcogen, attached directly or indirectly to the isoquinoline ring system by nonionic bonding (147) the -c(=x)- is part of a -c(=x)x- group, wherein the x's are the same or diverse chalcogens
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