US PATENT SUBCLASS 548 / 334.1
.~.~.~.~.~ The -C(=X)- is bonded directly to ring nitrogen of the diazole ring


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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}
300.1  DF  .~.~.~ 1,3-diazoles (including hydrogenated) {9}
333.5  DF  .~.~.~.~ Having -C(=X)-, wherein X is chalcogen, bonded directly to the diazole ring {2}
334.1.~.~.~.~.~ The -C(=X)- is bonded directly to ring nitrogen of the diazole ring


DEFINITION

Classification: 548/334.1

(under subclass 333.5) Compounds in which the group is bonded directly to a diazole ring nitrogen by nonionic bonding.

(1) Note. This subclass contains, for example: [figure]