| 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 |  | .~.~.~ Piperidines {8} |
| 185 | DF | .~.~.~.~> Process of forming a piperidine ring from a pyridine ring or from a partially hydrogenated pyridine ring |
| 186 | DF | .~.~.~.~> Plural piperidine rings {5} |
| 192 | DF | .~.~.~.~> Additional ring containing {9} |
| 242 | DF | .~.~.~.~> Chalcogen bonded directly to ring carbon of the piperidine ring {1} |
| 244 | DF | .~.~.~.~> Nitrogen attached directly to the piperidine ring by nonionic bonding |
| 245 | DF | .~.~.~.~> Having -C(=X)-, wherein X is chalcogen, bonded directly to the piperidine ring |
| 246 | DF | .~.~.~.~> Nitrogen attached indirectly to the piperidine ring by nonionic bonding {1} |
| 248 | DF | .~.~.~.~> Chalcogen attached indirectly to the piperidine ring by nonionic bonding |