US PATENT SUBCLASS 514 / 274
.~.~.~.~.~ Chalcogen bonded directly to pyrimidine at 2-position


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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}
247  DF  .~.~ Hetero ring is six-membered consisting of two nitrogens and four carbon atoms (e.g., pyridazines, etc.) {4}
256  DF  .~.~.~ 1,3-diazines (e.g., pyrimidines, etc.) {4}
269  DF  .~.~.~.~ Pyrimidines with chalcogen bonded directly to a ring carbon of said pyrimidine moiety {3}
274.~.~.~.~.~ Chalcogen bonded directly to pyrimidine at 2-position


DEFINITION

Classification: 514/274

Chalcogen bonded directly to pyrimidine at 2-position:

(under subclass 269) Subject matter wherein a chalcogen is directly bonded to the 2-position of the pyrimidine.

(1) Note. This subclass includes for example: [figure] [caption], etc.