| 568 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
|
| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {4} |
| 300 | DF | .~ OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11} |
| 303 | DF | .~.~ Ketones {10} |
| 367 | DF | .~.~.~ Plural alicyclic rings containing {1} |
| 368 | DF | .~.~.~.~ Polycyclo ring system {3} |
| 369 |  | .~.~.~.~.~ Tetracyclo ring system (e.g., homo steroids, etc.) {2} |
| 370 | DF | .~.~.~.~.~.~> The tetracyclo ring system consists of two five-membered and two six membered cyclos (e.g., B-nor-testosterone, etc.) {1} |
| 372 | DF | .~.~.~.~.~.~> The tetracyclo ring system consists of four six-membered cyclos (e.g., D homo-androstane, etc.) |