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} |
579 | DF | .~.~ Ethers {11} |
626 | DF | .~.~.~ Benzene ring containing {7} |
630 | DF | .~.~.~.~ Ether oxygen bonded directly to benzene ring {5} |
631 | DF | .~.~.~.~.~ Plural rings containing {6} |
640 | DF | .~.~.~.~.~.~ Plural benzene rings bonded directly to the same carbon {1} |
641 | .~.~.~.~.~.~.~ Polyoxy and halogen containing |