US PATENT SUBCLASS 546 / 94
.~.~.~.~.~ Ring nitrogen is shared by two of the cyclos

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}
26  DF  .~.~.~ Polycyclo ring system having the six-membered hetero ring as one of the cyclos {9}
79  DF  .~.~.~.~ Tricyclo ring system having the six-membered hetero ring as one of the cyclos {7}
94.~.~.~.~.~ Ring nitrogen is shared by two of the cyclos {1}
95  DF  .~.~.~.~.~.~> Benzo(a)quinolizines (including hydrogenated) {1}

DEFINITION

Classification: 546/94

Ring nitrogen is shared by two of the cyclos:

(under subclass 79) Compounds wherein the ring nitrogen is a member of two of the cyclos in the tricyclo ring system.

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