US PATENT SUBCLASS 568 / 650
.~.~.~.~.~.~ Hydroxy bonded directly to the benzene ring (H of -OH may be replaced by a Group IA or IIA light metal)

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {4}
300  DF  .~ OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11}
579  DF  .~.~ Ethers {11}
626  DF  .~.~.~ Benzene ring containing {7}
630  DF  .~.~.~.~ Ether oxygen bonded directly to benzene ring {5}
648  DF  .~.~.~.~.~ Polyoxy {3}
650.~.~.~.~.~.~ Hydroxy bonded directly to the benzene ring (H of -OH may be replaced by a Group IA or IIA light metal) {2}
651  DF  .~.~.~.~.~.~.~> Plural ether oxygens bonded directly to the benzene ring
652  DF  .~.~.~.~.~.~.~> Ether oxygen is ortho to the hydroxy {1}

DEFINITION

Classification: 568/650

Hydroxy bonded directly to the benzene ring (H of -OH may be substituted by M):

(under subclass 648) Compounds which contain a hydroxy group bonded directly to the benzene ring.