| 534 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| * | DD | ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1) {8} |
| 573 | DF | .~ Azo {51} |
| 617 | DF | .~.~ Fiber- or substrate-reactive azo compound {5} |
| 619 | DF | .~.~.~ Heavy metal or aluminum containing {2} |
| 620 | DF | .~.~.~.~ Halogen attached directly to a hetero ring or to an alicyclic ring by nonionic bonding {2} |
| 622 |  | .~.~.~.~.~ The hetero ring is six-membered and contains at least two nitrogens {6} |
| 623 | DF | .~.~.~.~.~.~> Diverse azo moieties bonded to the same metal |
| 624 | DF | .~.~.~.~.~.~> At least two such hetero rings attached indirectly to each other by nonionic bonding |
| 625 | DF | .~.~.~.~.~.~> Plural azo groups in the same azo moiety attached indirectly to each other by nonionic bonding |
| 626 | DF | .~.~.~.~.~.~> Chalcogen or carbon bonded directly to the six-membered hetero ring and is between the hetero ring and the azo group |
| 627 | DF | .~.~.~.~.~.~> Plural halogens attached directly to the hetero ring by nonionic bonding |
| 628 | DF | .~.~.~.~.~.~> Diverse hetero ring containing |