| 560 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {17} |
| 330 | DF | .~ Isocyanate esters (i.e., compounds containing the isocyanate group, -N=C=O, bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {7} |
| 355 |  | .~.~ Acyclic carbon bonded directly to the isocyanate group {2} |
| 356 | DF | .~.~.~> Halogen attached indirectly to the isocyanate group by acyclic nonionic bonding |
| 357 | DF | .~.~.~> Chalcogen, single bonded directly to carbon, attached indirectly to the isocyanate group by acyclic nonionic bonding (e.g., ether group containing, etc.) |