| 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} |
| 303 | DF | .~.~ Ketones {10} |
| 338 | DF | .~.~.~ Processes of preparing, purifying, or recovering alicyclic ring containing ketones {10} |
| 343 | DF | .~.~.~.~ Aldehyde or ketone reactant {10} |
| 353 | | .~.~.~.~.~ Ketone reacted with ketone |