| 568 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {4} |
| 300 | DF | .~ OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11} |
| 420 | DF | .~.~ Aldehydes {8} |
| 448 | DF | .~.~.~ Acyclic {4} |
| 449 | DF | .~.~.~.~ Processes {14} |
| 458 | DF | .~.~.~.~.~ Aldehyde reactant {5} |
| 463 | DF | .~.~.~.~.~.~ Aldehyde reacted with aldehyde (e.g., aldol condensation, etc.) {1} |
| 464 | | .~.~.~.~.~.~.~ Aldehyde reacted with diverse aldehyde |