| 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} |
| 314 | DF | .~.~.~ Carbonyl bonded directly to the six-membered hetero ring {4} |
| 323 | DF | .~.~.~.~ Acyclic nitrogen bonded directly to the carbonyl {1} |
| 324 | DF | .~.~.~.~.~ Acyclic nitrogen single bonded directly to acyclic nitrogen {1} |
| 325 |  | .~.~.~.~.~.~ Carbon double bonded directly to one of the acyclic nitrogens |