US PATENT SUBCLASS 514 / 211
.~.~ Hetero ring is seven-membered and includes at least one nitrogen and at least one hetero atom other than nitrogen

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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}
211.~.~ Hetero ring is seven-membered and includes at least one nitrogen and at least one hetero atom other than nitrogen

DEFINITION

Classification: 514/211

Hetero ring is seven-membered and includes at least one nitrogen and at least one hetero atom other than nitrogen:

(under subclass 183) Subject matter which contains a heterocyclic ring consisting of seven atoms, at least one of which is nitrogen and at least one other hetero atom, other than nitrogen.

(1) Note. See Glossary for definition of hetero atom.

SEE OR SEARCH CLASS

540, Organic Compounds,

488+, for a compound containing a hetero ring which includes nitrogen and sulfur ring atoms and subclasses 544+ for a compound containing a hetero ring which includes nitrogen and oxygen ring atoms.