US PATENT SUBCLASS 548 / 366.4
.~.~.~.~.~ Plural chalcogens bonded directly to diazole ring carbons

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
366.4.~.~.~.~.~ Plural chalcogens bonded directly to diazole ring carbons {2}
366.7  DF  .~.~.~.~.~.~> Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding
367.1  DF  .~.~.~.~.~.~> Chalcogen attached indirectly to the diazole ring by acyclic nonionic bonding

DEFINITION

Classification: 548/366.4

(under subclass 366.1) Compounds wherein at least two chalcogens (i.e., oxygen, sulfur, selenium, or tellurium) are bonded directly to ring carbons of the diazole ring.

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