| 568 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
| * | | ORGANIC COMPOUNDS (Class 532, Subclass 1) {4} |
| 1 | DF | .~> BORON CONTAINING {4} |
| 8 | DF | .~> PHOSPHORUS CONTAINING {5} |
| 18 | DF | .~> SULFUR CONTAINING {9} |
| 300 | DF | .~> OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11} |