US PATENT SUBCLASS 546 / 142
.~.~.~.~.~.~.~ Plural chalcogens attached directly to the six-membered hetero ring by nonionic bonding

Current as of: June, 1999
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546 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
*  DD  .~ 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}
1  DF  .~.~ Hetero ring is six-membered consisting of one nitrogen and five carbons {24}
26  DF  .~.~.~ Polycyclo ring system having the six-membered hetero ring as one of the cyclos {9}
112  DF  .~.~.~.~ Bicyclo ring system having the six-membered hetero ring as one of the cyclos {7}
139  DF  .~.~.~.~.~ Isoquinolines (including hydrogenated) {10}
141  DF  .~.~.~.~.~.~ Chalcogen attached directly to the six-membered hetero ring by nonionic bonding {1}
142.~.~.~.~.~.~.~ Plural chalcogens attached directly to the six-membered hetero ring by nonionic bonding

DEFINITION

Classification: 546/142

Plural chalcogens attached directly to the six-membered hetero ring by nonionic bonding:

(under subclass 141) Compounds wherein at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are attached directly to the six-membered hetero ring of the isoquinoline ring system by nonionic bonding.