US PATENT SUBCLASS 514 / 228.8
.~.~ 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.)

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514 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

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.~.~ 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}
229.2  DF  .~.~.~> Three or more ring hetero atoms in the six-membered hetero ring
229.5  DF  .~.~.~> Polycyclo ring system having the six-membered hetero ring as one of the cyclos (e.g., maytansinoids, etc.) {2}
230.8  DF  .~.~.~> Chalcogen bonded directly to ring carbon of 1,4-oxazine ring
231.2  DF  .~.~.~> Morpholines (i.e., fully hydrogenated 1,4- oxazines) {5}

DEFINITION

Classification: 514/228.8

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.):

(under subclass 183) Subject matter in which the hetero ring contains at least nitrogen and oxygen as ring hetero atoms and is six-membered.

(1) Note. An example of an active ingredient provided for herein is: [figure]