| 514 / | HD | DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS |
| 1 | DF | DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29} |
| 579 | DF | .~ Nitrogen containing other than solely as a nitrogen in an inorganic ion of an addition salt, a nitro or a nitroso DOAI {22} |
| 646 | DF | .~.~ Benzene ring containing {5} |
| 656 | | .~.~.~ Polycyclo ring system {1} |
| 657 | DF | .~.~.~.~> Bicyclo ring system |