| 546 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| * | 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} |
| 192 | DF | .~.~.~.~ Additional ring containing {9} |
| 229 | DF | .~.~.~.~.~ Nitrogen attached indirectly to the piperidine ring by nonionic bonding {3} |
| 232 | DF | .~.~.~.~.~.~ Chalcogen attached indirectly to the piperidine ring by nonionic bonding {2} |
| 233 | DF | .~.~.~.~.~.~.~ Acyclic nitrogen bonded directly to a -C(=X)- group, wherein X is chalcogen {1} |
| 234 |  | .~.~.~.~.~.~.~.~ Plural carbocyclic rings containing |