US PATENT SUBCLASS 564 / 361
.~.~.~.~.~ Plural hydroxy groups bonded directly to the aryl ring or ring system (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)

Current as of: June, 1999
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564 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ AMINO NITROGEN CONTAINING (E.G., UREA, SULFONAMIDES, NITROSAMINES, OXYAMINES, ETC., AND SALTS THEREOF) {37}
305  DF  .~.~ Benzene ring containing {24}
336  DF  .~.~.~ Amino nitrogen attached to aryl ring or ring system by an acyclic carbon or chain {11}
355  DF  .~.~.~.~ Hydroxy, bonded directly to carbon, or ether oxygen attached directly or indirectly to the acyclic carbon or chain by acyclic nonionic bonding with no amino nitrogen between the hydroxy or ether oxygen and the aryl ring or ring system (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal) {5}
361.~.~.~.~.~ Plural hydroxy groups bonded directly to the aryl ring or ring system (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal) {1}
362  DF  .~.~.~.~.~.~> Four or more substituents on the aryl ring or ring system

DEFINITION

Classification: 564/361

(under subclass 355) Compounds wherein the aryl ring or ring system has more than one hydroxy group wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal bonded directly to a ring carbon.

(1) Note. This subclass contains, for example: [figure] [figure]