US PATENT SUBCLASS 546 / 244
.~.~.~.~ Nitrogen attached directly to the piperidine ring by nonionic bonding

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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}
184  DF  .~.~.~ Piperidines {8}
244.~.~.~.~ Nitrogen attached directly to the piperidine ring by nonionic bonding

DEFINITION

Classification: 546/244

Nitrogen attached directly to the piperidine ring by nonionic bonding:

(under subclass 184) Compounds wherein nitrogen is attached directly to the piperidine ring by nonionic bonding.

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

SEE OR SEARCH THIS CLASS, SUBCLASS:

304+, for tautomers of nitrogen double bonded directly to piperidine (i.e., nitrogen attached directly to pyridine or partially hydrogenated pyridine), e.g., [figure]