| 562 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {41} |
| 400 | DF | .~ Carboxylic acids and salts thereof {14} |
| 512 | DF | .~.~ Acyclic {14} |
| 553 | DF | .~.~.~ Nitrogen bonded to carbon of organic radical (e.g., amino acids, etc.) {10} |
| 556 | DF | .~.~.~.~ Sulfur or selenium {2} |
| 557 | DF | .~.~.~.~.~ Alpha N, beta S - acids or salts thereof {1} |
| 558 | ![]() | .~.~.~.~.~.~ Penicillamine per se or salt thereof |