| 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} |
| 561 | DF | .~.~.~.~ Plural nitrogens {4} |
| 565 | | .~.~.~.~.~ Polycarboxylic {1} |
| 566 | DF | .~.~.~.~.~.~> Ethylene diamine tetraacetic acid per se or salt thereof |