US PATENT SUBCLASS 548 / 379.4
.~.~.~.~.~ Chalcogen or nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding


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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}
356.1  DF  .~.~.~ 1,2-diazoles (including hydrogenated) {8}
379.1  DF  .~.~.~.~ One double bond between ring memebers of the diazole ring (i.e., pyrazoline) {2}
379.4.~.~.~.~.~ Chalcogen or nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding


DEFINITION

Classification: 548/379.4

(under subclass 379.1) Compounds wherein nitrogen or chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the diazole ring by acyclic nonionic bonding.

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