| 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 | DF | .~.~.~ The hetero ring is five-membered {7} |
| 439 | DF | .~.~.~.~ Plural hetero atoms in the hetero ring {1} |
| 440 |  | .~.~.~.~.~ Only two ring sulfurs in the hetero ring {2} |
| 441 | DF | .~.~.~.~.~.~> Chalcogen bonded directly to ring carbon of the hetero ring |
| 442 | DF | .~.~.~.~.~.~> Nitrogen bonded directly to the hetero ring by nonionic bonding |