US PATENT SUBCLASS 546 / 334
.~.~.~.~ Chalcogen attached indirectly to the six-membered hetero ring by nonionic bonding

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

Internet Version by PATENTEC © 1999      Terms of Use


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}
329  DF  .~.~.~ Nitrogen attached indirectly to the six-membered hetero ring by nonionic bonding {5}
334.~.~.~.~ Chalcogen attached indirectly to the six-membered hetero ring by nonionic bonding {3}
335  DF  .~.~.~.~.~> The chalcogen, X, is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens
336  DF  .~.~.~.~.~> Acyclic nitrogen bonded directly to a -C(=X)- group, wherein X is chalcogen {1}
338  DF  .~.~.~.~.~> Acyclic nitrogen bonded directly to chalcogen

DEFINITION

Classification: 546/334

Chalcogen attached indirectly to the six-membered hetero ring by nonionic bonding:

(under subclass 329) Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded indirectly to the six-membered hetero ring by nonionic bonding.

(1) Note. An example of a compound provided for herein is: [figure]