| 585 / | HD | CHEMISTRY OF HYDROCARBON COMPOUNDS |
| 500 | DF | UNSATURATED COMPOUND SYNTHESIS {14} |
| 601 | DF | .~ Diolefin product {4} |
| 603 | DF | .~.~ From nonhydrocarbon feed {3} |
| 606 | | .~.~.~ O-containing {3} |
| 607 | DF | .~.~.~.~> Plural O-containing organic compounds |
| 608 | DF | .~.~.~.~> With unsaturated hydrocarbon in feed |
| 609 | DF | .~.~.~.~> Alcohol {1} |