| 549 / | 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) {2} |
| 200 | DF | .~.~ Oxygen containing hetero ring (e.g., dioxirane, etc.) {16} |
| 429 |  | .~.~.~ The hetero ring is five-membered {14} |
| 430 | DF | .~.~.~.~> Plural ring oxygens in the hetero ring {8} |
| 456 | DF | .~.~.~.~> Polycyclo ring system having the hetero ring as one of the cyclos {3} |
| 472 | DF | .~.~.~.~> Plural hetero rings {1} |
| 474 | DF | .~.~.~.~> Cyano bonded directly to the hetero ring |
| 475 | DF | .~.~.~.~> Chalcogen bonded directly to the hetero ring {2} |
| 480 | DF | .~.~.~.~> Nitrogen bonded directly to the hetero ring {1} |
| 483 | DF | .~.~.~.~> Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring {5} |
| 491 | DF | .~.~.~.~> Nitrogen attached indirectly to the hetero ring by nonionic bonding {2} |
| 497 | DF | .~.~.~.~> Chalcogen attached indirectly to the hetero ring by nonionic bonding {3} |
| 504 | DF | .~.~.~.~> Halogen attached directly or indirectly to the hetero ring by nonionic bonding |
| 505 | DF | .~.~.~.~> Plural double bonds between ring members of the hetero ring {1} |
| 507 | DF | .~.~.~.~> One double bond between ring members of the hetero ring |
| 508 | DF | .~.~.~.~> Preparing from compound containing -COO- group |
| 509 | DF | .~.~.~.~> Preparing from a hydroxy containing compound |