US PATENT SUBCLASS 534 / 665
.~.~.~.~ Azo bonded directly to the hetero ring or to a polycyclo ring system which contains the hetero ring as one of the cyclos

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}
660  DF  .~.~ Hydroxy and carbonyl of -C00- bonded directly to a monocyclic benzene ring (H or hydroxy may be replaced by a substituted or unsubstituted ammonium ion or a metal) {5}
664  DF  .~.~.~ Hetero ring containing {1}
665.~.~.~.~ Azo bonded directly to the hetero ring or to a polycyclo ring system which contains the hetero ring as one of the cyclos

DEFINITION

Classification: 534/665

(under subclass 664) Compounds wherein an azo group is bonded directly to a hetero ring or to a polycyclo ring system which contains a hetero ring as one of the cyclos.

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