US PATENT SUBCLASS 514 / 214
.~.~.~.~ Ring nitrogen is shared by two or three of the cyclos

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}
212  DF  .~.~ Hetero ring is seven-membered consisting of one nitrogen and six carbon atoms {1}
213  DF  .~.~.~ Polycyclo ring system having the seven-membered hetero ring as one of the cyclos {4}
214.~.~.~.~ Ring nitrogen is shared by two or three of the cyclos

DEFINITION

Classification: 514/214

Ring nitrogen is shared by two or three of the cyclos:

(under subclass 213) Subject matter wherein the ring nitrogen of the seven-membered hetero ring is also a member of one or two additional cyclos in the polycyclo ring system.