| 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} |
| 700 | DF | .~.~ Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal) {10} |
| 715 | DF | .~.~.~ Benzene ring containing {8} |
| 716 | DF | .~.~.~.~ Phenols (H of -OH may be replaced by a Group IA or IIA light metal) {14} |
| 731 | DF | .~.~.~.~.~ Additional ring containing {2} |
| 732 | DF | .~.~.~.~.~.~ Polycyclo ring system {2} |
| 734 | DF | .~.~.~.~.~.~.~ Bicyclo ring system {1} |
| 735 | DF | .~.~.~.~.~.~.~.~ Naphthols {7} |
| 740 |  | .~.~.~.~.~.~.~.~.~ Preparing by dehydrogenation |