US PATENT SUBCLASS 534 / 795
.~.~.~.~ The hetero ring is five-membered and contains at least one atom each of sulfur, nitrogen and carbon

Current as of: June, 1999
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534 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1) {8}
573  DF  .~ Azo {51}
751  DF  .~.~ Hetero ring containing {5}
753  DF  .~.~.~ Azo bonded directly to the hetero ring or to a polycyclo ring system which contains the hetero ring as one of the cyclos {11}
795.~.~.~.~ The hetero ring is five-membered and contains at least one atom each of sulfur, nitrogen and carbon

DEFINITION

Classification: 534/795

(under subclass 753) Compounds in which the hetero ring is five-membered and contains at least one atom each of each of sulfur, nitrogen, and carbon.

(1) Note. An example of a compound provided for herein is: [figure]