| 556 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {3} |
| 400 | DF | .~ SILICON CONTAINING {19} |
| 465 | DF | .~.~ Carbon attached directly or indirectly to the silicon by nonionic bonding (e.g., silanes, etc.) {5} |
| 482 | DF | .~.~.~ Silicon and carbon bonded directly to the same oxygen {4} |
| 485 | ![]() | .~.~.~.~ Halogen bonded directly to acyclic carbon |