| 540 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
|
| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {1} |
| 1 | DF | .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS {6} |
| 484 | DF | .~.~ The hetero ring contains seven members including nitrogen and carbon {14} |
| 485 |  | .~.~.~ Chalcogen double bonded directly to a ring carbon adjacent to the ring nitrogen (e.g., caprolactam, etc.) {15} |
| 486 | DF | .~.~.~.~> Heavy metal or aluminum containing |
| 487 | DF | .~.~.~.~> Silicon or phosphorus attached directly or indirectly to the hetero ring by nonionic bonding |
| 488 | DF | .~.~.~.~> Chalcogen in the hetero ring {2} |
| 492 | DF | .~.~.~.~> Plural nitrogens in the hetero ring {3} |
| 519 | DF | .~.~.~.~> Polycyclo ring system which contains the hetero ring as one of the cyclos {4} |
| 524 | DF | .~.~.~.~> Additional hetero ring containing {1} |
| 526 | DF | .~.~.~.~> Additional chalcogen bonded directly to the hetero ring |
| 527 | DF | .~.~.~.~> Nitrogen bonded directly to the hetero ring {1} |
| 529 | DF | .~.~.~.~> Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring |
| 530 | DF | .~.~.~.~> Halogen bonded directly to the hetero ring |
| 531 | DF | .~.~.~.~> Chalcogen or nitrogen attached indirectly to the hetero ring by nonionic bonding |
| 532 | DF | .~.~.~.~> Preparing from a compound containing a hetero ring {1} |
| 534 | DF | .~.~.~.~> Preparing from a compound containing a cycloaliphatic ring {2} |
| 538 | DF | .~.~.~.~> Cyclization to form the hetero ring {1} |
| 540 | DF | .~.~.~.~> Purification or recovery |