570 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
* | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {1} |
101 | DF | .~ HALOGEN CONTAINING {21} |
216 | DF | .~.~ Processes of preparing, purifying, or recovering unsaturated compound {12} |
237 | .~.~.~ Increasing the number of carbon atoms in the compound |