| 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} |
| 950 | DF | .~.~ Processes of oxidizing nonaromatic hydrocarbons; or purification or recovery of the products of such processes {6} |
| 954 | | .~.~.~ Liquid phase oxidation |