US PATENT SUBCLASS 546 / 341
.~.~.~.~.~ The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same of diverse chalcogens

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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}
339  DF  .~.~.~ Chalcogen attached indirectly to the six-membered hetero ring by nonionic bonding (e.g., sulfato betaines, etc.) {3}
340  DF  .~.~.~.~ The chalcogen, X, is in a -C(=X)- group {1}
341.~.~.~.~.~ The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same of diverse chalcogens {1}
342  DF  .~.~.~.~.~.~> Additional ring containing

DEFINITION

Classification: 546/341

The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogen:

(under subclass 340) Compounds in which the is part of a group, wherein the X's are the same or diverse chalcogens (i.e. oxygen, sulfur, selenium, or tellurium).

(1) Note. An example of a compound provided for herein is: [figure]