| 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} | 
| 576 |  | .~.~.~.~ Beta alanine per se or salt thereof |