| 562 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {41} |
| 30 | DF | .~ Sulfonic acids or salts thereof (i.e., compounds containing the sulfonate group, -S(=O)(=O)-O- wherein the single bonded oxygen is bonded directly to hydrogen, or to a group IA or IIA light metal or to substituted or unsubstituted ammonium) {15} |
| 101 |  | .~.~ Plural sulfonate groups attached indirectly to each other by acyclic nonionic bonding {2} |
| 102 | DF | .~.~.~> Nitrogen or -C(=X)-, wherein X is chalcogen, attached indirectly to the sulfonate groups by nonionic bonding |
| 103 | DF | .~.~.~> Plural nonsulfonate chalcogens attached indirectly to the sulfonate groups by nonionic bonding |