US PATENT SUBCLASS 546 / 275.1
.~.~.~.~.~.~ Chalcogen attached indirectly to the 1,3-diazole ring by acyclic nonionic bonding


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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}
268.1  DF  .~.~.~ Additional hetero ring containing {4}
268.4  DF  .~.~.~.~ The additional hetero ring is five-membered having two or more ring hetero atoms of which at least one is nitrogen {9}
272.7  DF  .~.~.~.~.~ 1,3-diazoles (including hydrogenated) {5}
275.1.~.~.~.~.~.~ Chalcogen attached indirectly to the 1,3-diazole ring by acyclic nonionic bonding


DEFINITION

Classification: 546/275.1

Chalcogen attached indirectly to the 1,3-diazole ring by acyclic nonionic bonding:

(under subclass 272.7) Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached indirectly to the 1,3-diazole ring by acyclic nonionic bonding.