534 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
* | DD | ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1) {8} |
573 | DF | .~ Azo {51} |
692 | DF | .~.~ Heavy metal or aluminum containing {7} |
713 | DF | .~.~.~ Benzene ring containing {6} |
722 | .~.~.~.~ Plural bicyclo carbocyclic ring systems bonded directly to the azo group |