US PATENT SUBCLASS 514 / 45
.~.~.~.~ Purines (including hydrogenated) (e.g., adenine, guanine, etc.)

Current as of: June, 1999
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514 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

1  DF  DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29}
23  DF  .~ Carbohydrate (i.e., saccharide radical containing) DOAI {6}
42  DF  .~.~ N-glycoside {1}
43  DF  .~.~.~ Nitrogen containing hetero ring {4}
45.~.~.~.~ Purines (including hydrogenated) (e.g., adenine, guanine, etc.) {2}
46  DF  .~.~.~.~.~> Adenosine or derivative {1}
48  DF  .~.~.~.~.~> Phosphorus containing

DEFINITION

Classification: 514/45

Purines (including hydrogenated) (e.g., adenine, guanine, etc.):

(under subclass 43) Subject matter wherein the hetero ring is a purine, as illustrated below, or substituted purine. [figure]