US PATENT SUBCLASS 546 / 100
.~.~.~.~.~.~.~ The nitrogen is bonded directly to a carbocyclic ring of the tricyclo ring system

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}
98  DF  .~.~.~.~.~ Ring carbon is shared by each of the three cyclos (e.g., 1,8 naphthalimides, etc.) {1}
99  DF  .~.~.~.~.~.~ Nitrogen, other than as nitro or nitroso, attached directly or indirectly to the tricyclo ring system by nonionic bonding {1}
100.~.~.~.~.~.~.~ The nitrogen is bonded directly to a carbocyclic ring of the tricyclo ring system

DEFINITION

Classification: 546/100

The Nitrogen is bonded directly to a carbocyclic ring of the tricyclo ring system:

(under subclass 99) Compounds in which the nitrogen is bonded directly to a carbocyclic ring of the tricyclo ring system.