| 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} |
| 430 | DF | .~.~ Sulfur containing hetero ring {3} |
| 438 |  | .~.~.~ The hetero ring is five-membered {7} |
| 439 | DF | .~.~.~.~> Plural hetero atoms in the hetero ring {1} |
| 443 | DF | .~.~.~.~> Polycyclo ring system having the hetero ring as one of the cyclos |
| 444 | DF | .~.~.~.~> Additional hetero ring |
| 445 | DF | .~.~.~.~> Chalcogen bonded directly to ring carbon of the hetero ring |
| 446 | DF | .~.~.~.~> Chalcogen bonded directly to ring sulfur by nonionic bonding |
| 447 | DF | .~.~.~.~> Nitrogen bonded directly to the hetero ring |
| 448 | DF | .~.~.~.~> C=O bonded directly to the hetero ring (X is chalcogen) |