| 552 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
| * | DD | ORGANIC COMPOUNDS (Class 532, subclass 1) {11} |
| 1 | DF | .~ Azides {8} |
| 10 | ![]() | .~.~ Acyclic carbon bonded directly to the azide group {1} |
| 11 | DF | .~.~.~> Nitrogen attached indirectly to the azide group by acyclic nonionic bonding (e.g., diazides, etc.) {1} |