US PATENT SUBCLASS 534 / 830
.~.~.~.~ Hydroxy and the -C(=X)- are bonded directly to the same bicyclo ring system (H of hydroxy may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)

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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}
816  DF  .~.~ Exactly two azo groups attached indirectly to each other by nonionic bonding {7}
829  DF  .~.~.~ Containing -C(=X)-, wherein X is chalcogen (e.g., carbonyl, etc.) {1}
830.~.~.~.~ Hydroxy and the -C(=X)- are bonded directly to the same bicyclo ring system (H of hydroxy may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)

DEFINITION

Classification: 534/830

(under subclass 829) Compounds wherein -OH and the -- group are bonded directly to the same bicyclo ring system; wherein H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal.

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