US PATENT SUBCLASS 534 / 606
.~.~.~.~.~ Azo bonded directly to a hetero ring or to a polycyclo ring system having a 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}
603  DF  .~.~ Quaternary ammonium or hydrazinium attached indirectly to an azo group by nonionic bonding {4}
604  DF  .~.~.~ Hetero ring containing {1}
605  DF  .~.~.~.~ The pentavalent nitrogen is a ring member {2}
606.~.~.~.~.~ Azo bonded directly to a hetero ring or to a polycyclo ring system having a hetero ring as one of the cyclos {1}
607  DF  .~.~.~.~.~.~> The hetero ring contains the pentavalent nitrogen {4}

DEFINITION

Classification: 534/606

(under subclass 605) 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. Examples of compounds provided for herein are: [figure] [figure]