| 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} |
| 401 | DF | .~.~ Racemization or separation of optical isomers {1} |
| 402 | ![]() | .~.~.~ Physical resolution |