US PATENT SUBCLASS 548 / 267.6
.~.~.~.~.~ Having -C(=X)-, wherein X is chalcogen, bonded directly to the nitrogen

Current as of: June, 1999
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548 /   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) {4}
100  DF  .~.~ Hetero ring is five-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazoles, etc.) {18}
262.2  DF  .~.~.~ 1,2,4-triazoles (including hydrogenated) {13}
267.2  DF  .~.~.~.~ Nitrogen attached indirectly to the triazole ring by acyclic nonionic bonding {2}
267.6.~.~.~.~.~ Having -C(=X)-, wherein X is chalcogen, bonded directly to the nitrogen

DEFINITION

Classification: 548/267.6

(under subclass 267.2) Compounds wherein the nitrogen is bonded directly to -C(=X)-, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).

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