| 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 | DF | .~.~.~ Oxy {7} |
| 582 | | .~.~.~.~ Polycarboxylic {3} |
| 583 | DF | .~.~.~.~.~> Ether |
| 584 | DF | .~.~.~.~.~> Citric acid per se or salt thereof |
| 585 | DF | .~.~.~.~.~> Tartaric acid per se or salt thereof |