| 514 / | HD | DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS |
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| 1 | DF | DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29} |
| 183 | DF | .~ Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., O,S,Se or Te) or nitrogen as the only ring hetero atoms DOAI {16} |
| 212 | DF | .~.~ Hetero ring is seven-membered consisting of one nitrogen and six carbon atoms {1} |
| 213 |  | .~.~.~ Polycyclo ring system having the seven-membered hetero ring as one of the cyclos {4} |
| 214 | DF | .~.~.~.~> Ring nitrogen is shared by two or three of the cyclos |
| 215 | DF | .~.~.~.~> Additional hetero atom in the polycyclo ring system |
| 216 | DF | .~.~.~.~> Two of the cyclos share at least three ring carbons (i.e., bridged) |
| 217 | DF | .~.~.~.~> Tricyclo ring system having the seven-membered hetero ring a one of the cyclos |