534 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
* | DD | ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1) {8} |
573 | DF | .~ Azo {51} |
588 | DF | .~.~ Process utilizing azo compound as reactant {13} |
602 | .~.~.~ Metallization of the azo reactant in presence of an additional organic compound |