| 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 | DF | .~.~.~ The five-membered hetero ring consists of one nitrogen and four carbons {9} |
| 410 | DF | .~.~.~.~ Polycyclo ring system having the five-membered hetero ring as one of the cyclos {2} |
| 412 |  | .~.~.~.~.~ Bicyclo ring system having the five-membered hetero ring as one of the cyclos {4} |
| 413 | DF | .~.~.~.~.~.~> Ring nitrogen is shared by the cyclos of the bicyclo ring system |
| 414 | DF | .~.~.~.~.~.~> Additional hetero ring which is not part of the bicyclo ring system |
| 415 | DF | .~.~.~.~.~.~> The bicyclo ring system consists of the five-membered hetero ring and a benzene ring (e.g., indole, etc.) {3} |
| 421 | DF | .~.~.~.~.~.~> Chalcogen bonded directly to ring carbon of the five-membered hetero ring (e.g., adrenochrome, etc.) |