| 562 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {41} |
| 808 |  | .~ Phosphorus halides (i.e., compounds having halogen attached directly to phosphorus by nonionic bonding) {6} |
| 809 | DF | .~.~> Nitrogen bonded directly to the phosphorus {1} |
| 811 | DF | .~.~> Additional phosphorus attached directly or indirectly to the phosphorus by nonionic bonding |
| 812 | DF | .~.~> The phosphorus is in a ring |
| 813 | DF | .~.~> Sulfur bonded directly to the phosphorus {2} |
| 816 | DF | .~.~> Oxygen bonded directly to the phosphorus {3} |
| 820 | DF | .~.~> Forming phosphorus to carbon bond |