| 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} |
| 228.8 | DF | .~.~ Hetero ring is six-membered and includes at least nitrogen and oxygen as ring hetero atoms (e.g., monocyclic 1,2- and 1,3-oxazines, etc.) {4} |
| 231.2 | DF | .~.~.~ Morpholines (i.e., fully hydrogenated 1,4- oxazines) {5} |
| 231.5 | DF | .~.~.~.~ Additional hetero ring attached directly or indirectly to the morpholine ring by nonionic bonding {3} |
| 235.5 |  | .~.~.~.~.~ Ring nitrogen in the additional hetero ring {3} |
| 235.8 | DF | .~.~.~.~.~.~> Plural ring nitrogens in the additional hetero ring (e.g., imidazole, pyrazine, etc.) {2} |
| 236.8 | DF | .~.~.~.~.~.~> Ring chalcogen in the additional hetero ring (e.g., oxazole, etc.) |
| 237.2 | DF | .~.~.~.~.~.~> The additional hetero ring is attached indirectly to the morpholine ring by an acyclic chain having a hetero atom as a chain member |