| 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} |
| 359 | DF | .~.~ Five-membered hetero ring containing at least one nitrogen ring atom (e.g., 1,2,3-triazoles, etc.) {11} |
| 408 |  | .~.~.~ The five-membered hetero ring consists of one nitrogen and four carbons {9} |
| 409 | DF | .~.~.~.~> Spiro ring system |
| 410 | DF | .~.~.~.~> Polycyclo ring system having the five-membered hetero ring as one of the cyclos {2} |
| 422 | DF | .~.~.~.~> Additional hetero ring |
| 423 | DF | .~.~.~.~> C=X bonded directly to the five-membered hetero ring by nonionic bonding (X is chalcogen) |
| 424 | DF | .~.~.~.~> Chalcogen bonded directly to the five-membered hetero ring by nonionic bonding {1} |
| 426 | DF | .~.~.~.~> Nitrogen bonded directly to the five-membered hetero ring by nonionic bonding |
| 427 | DF | .~.~.~.~> Two double bonds between ring members of the five-membered hetero ring (e.g., pyrrole, etc.) |
| 428 | DF | .~.~.~.~> Chalcogen bonded indirectly to the five-membered hetero ring by acyclic nonionic bonding |
| 429 | DF | .~.~.~.~> Carbocyclic ring bonded directly to the five-membered hetero ring |