US PATENT SUBCLASS 534 / 672
.~.~.~.~.~ Plural monocyclic benzene rings, each having hydroxy and carbonyl of -COO- bonded directly thereto


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}
670  DF  .~.~.~ Two azo groups attached indirectly to each other by nonionic bonding {1}
671  DF  .~.~.~.~ Sulfonic acid group containing (-(0=)S(=0)-OH, wherein H of -OH may be replaced by a substituted or unsubstituted ammonium ion or metal) {2}
672.~.~.~.~.~ Plural monocyclic benzene rings, each having hydroxy and carbonyl of -COO- bonded directly thereto


DEFINITION

Classification: 534/672

(under subclass 671) Compounds which contain at least two monocyclic benzene rings, each of which has an -OH group and a -COO- group bonded directly to it.

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