568 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
* | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {4} |
18 | DF | .~ SULFUR CONTAINING {9} |
38 | DF | .~.~ Thioethers {5} |
59 | DF | .~.~.~ Acyclic {1} |
60 | .~.~.~.~ Symmetrical (e.g., dimethyl sulfide, etc.) |