| 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} |
| 579 | | .~.~.~ Oxy {7} |
| 580 | DF | .~.~.~.~> Purification or recovery per se |
| 581 | DF | .~.~.~.~> Sulfur |
| 582 | DF | .~.~.~.~> Polycarboxylic {3} |
| 586 | DF | .~.~.~.~> Halogen |
| 587 | DF | .~.~.~.~> Polyoxy |
| 588 | DF | .~.~.~.~> Alkoxy |
| 589 | DF | .~.~.~.~> Lactic acid per se or salt thereof |