| 568 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {4} |
| 18 | DF | .~ SULFUR CONTAINING {9} |
| 21 | | .~.~ Sulfur bonded directly to sulfur (e.g., disulfides, etc.) {4} |
| 22 | DF | .~.~.~> Oxygen containing {1} |
| 24 | DF | .~.~.~> Halogen containing |
| 25 | DF | .~.~.~> Benzene ring containing |
| 26 | DF | .~.~.~> Preparing by reacting a thiol or mercaptide (i.e., reactant contains -SH or -SM where M is a Group IA or IIA light metal) |