| 556 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
|
| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {3} |
| 400 | DF | .~ SILICON CONTAINING {19} |
| 445 |  | .~.~ Two carbons bonded directly to the same oxygen {3} |
| 446 | DF | .~.~.~> Additional oxygen bonded directly to the silicon and to a group containing the oxygen and two carbons |
| 447 | DF | .~.~.~> Two carbocyclic rings bonded directly to the oxygen |
| 448 | DF | .~.~.~> One of the two carbons is part of a substituent on the oxygen, which substituent contains halogen and does not contain silicon or a benzene ring |