US PATENT SUBCLASS 514 / 355
.~.~.~.~ At 3-position

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}
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}
277  DF  .~.~ Hetero ring is six-membered consisting of one nitrogen and five carbon atoms {11}
354  DF  .~.~.~ C=O bonded directly to the six-membered hetero ring {1}
355.~.~.~.~ At 3-position {1}
356  DF  .~.~.~.~.~> C=O in a C(=O)O group (e.g., nicotinic acid, etc.)

DEFINITION

Classification: 514/355

At 3-position:

(under subclass 354) Subject matter wherein the C=O group is attached directly to the 3-position of the six-membered hetero ring e.g., [figure] [caption], etc.