US PATENT SUBCLASS 548 / 369.1
.~.~.~.~.~.~ Chalcogen attached indirectly to the nitrogen by acyclic nonionic bonding


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}
356.1  DF  .~.~.~ 1,2-diazoles (including hydrogenated) {8}
366.1  DF  .~.~.~.~ Chalcogen bonded directly to ring carbon of the diazole ring {7}
367.4  DF  .~.~.~.~.~ Nitrogen attached directly to the diazole ring by nonionic bonding {5}
369.1.~.~.~.~.~.~ Chalcogen attached indirectly to the nitrogen by acyclic nonionic bonding


DEFINITION

Classification: 548/369.1

(under subclass 367.4) Compounds wherein the nitrogen is attached indirectly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) by acyclic nonionic bonding.

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