US PATENT SUBCLASS 546 / 281.4
.~.~.~.~.~.~ Nitrigen attached directly to the six-membered hetero ring or to the additional hetero ring by nonionic bonding

Current as of: June, 1999
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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}
279.7  DF  .~.~.~.~ Ring sulfur in the additional hetero ring {2}
280.4  DF  .~.~.~.~.~ The additional hetero ring is five-membered {3}
281.4.~.~.~.~.~.~ Nitrigen attached directly to the six-membered hetero ring or to the additional hetero ring by nonionic bonding

DEFINITION

Classification: 546/281.4

Nitrogen attached directly to the six-membered hetero ring or to the additional hetero ring by nonionic bonding:

(under subclass 280.4) Compounds wherein the six-membered hetero ring or the additional hetero ring is attached directly to nitrogen by nonionic bonding.

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