| 562 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {41} |
| 8 | DF | .~ Phosphorus acids or salts thereof (i.e., compounds having -XH, wherein X is chalcogen, attached directly to phosphorus by nonionic bonding and wherein the hydrogen may be replaced by a substituted or unsubstituted ammonium or by a group IA or IIA light metal) {7} |
| 11 | DF | .~.~ Nitrogen attached indirectly to the phosphorus by nonionic bonding {3} |
| 16 |  | .~.~.~ The nitrogen and the phosphorus are bonded directly to the same carbon {1} |
| 17 | DF | .~.~.~.~> The nitrogen is bonded to an additional acyclic carbon or acyclic carbon chain, to which a -C(=X)X- group is bonded directly, wherein the X's are the same or diverse chalcogen {1} |