| 570 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {1} |
| 101 | DF | .~ HALOGEN CONTAINING {21} |
| 190 | DF | .~.~ Processes of preparing, purifying, or recovering benzene ring containing compound {9} |
| 206 | DF | .~.~.~ Bonding halogen directly to benzene ring {1} |
| 207 | | .~.~.~.~ Chlorination {1} |
| 208 | DF | .~.~.~.~.~> Catalyst utilized {2} |