US PATENT SUBCLASS 534 / 788
.~.~.~.~.~ The hetero ring consists of sulfur, nitrogen and carbon (e.g., benzothiazole, etc.)

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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}
787  DF  .~.~.~.~ The hetero ring is one of the cyclos in a polycyclo ring system {3}
788.~.~.~.~.~ The hetero ring consists of sulfur, nitrogen and carbon (e.g., benzothiazole, etc.)

DEFINITION

Classification: 534/788

(under subclass 787) Compounds wherein the hetero ring consists of sulfur, nitrogen and carbon, e.g., benzothlazole, etc.

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