US PATENT SUBCLASS 546 / 311
.~.~.~.~ The nitrogen bonded additionally only to hydrogen

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}
304  DF  .~.~.~ Nitrogen attached directly to the six-membered hetero ring by nonionic bonding {7}
311.~.~.~.~ The nitrogen bonded additionally only to hydrogen

DEFINITION

Classification: 546/311

The nitrogen bonded additionally only to hydrogen:

(under subclass 304) Compounds in which the remaining valences of the nitrogen are bonded only to hydrogen.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]

SEE OR SEARCH THIS CLASS, SUBCLASS:

223, and 244, for tautomers of nitrogen attached directly to pyridine or partially hydrogenated pyridine (i.e., nitrogen

double bonded directly to piperidine), e.g., [figure]