US PATENT SUBCLASS 514 / 203
.~.~.~.~ 3-position substituent contains pyridine ring

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}
200  DF  .~.~ 1-thia-5-aza-bicyclo (4.2.0) octane ring containing (including dehydrogenated) (e.g., cephalosporins, etc.) {4}
202  DF  .~.~.~ Additional hetero ring {2}
203.~.~.~.~ 3-position substituent contains pyridine ring

DEFINITION

Classification: 514/203

3-Position substituent contains pyridine ring:

(under subclass 202) Subject matter wherein a substituent in 3-position of the bicyclo octane ring system contains a pyridine ring.