US PATENT SUBCLASS 564 / 274
.~.~.~.~.~ Substituent Q contains hydroxy, bonded directly to carbon, or ether (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}
248  DF  .~.~ Containing nitrogen double bonded directly to carbon {8}
271  DF  .~.~.~ Aldimines or ketimines which contain benzene ring (i.e., HCH=NH, wherein substitution may be made for hydrogen only but a hydrogen or carbon must be bonded directly to the carbon) {3}
272  DF  .~.~.~.~ Benzylidene imines (i.e., Q-benzene-CH=NH, wherein Q is a substituent or hydrogen and substitution may be made for hydrogen only) {3}
274.~.~.~.~.~ Substituent Q contains hydroxy, bonded directly to carbon, or ether (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)

DEFINITION

Classification: 564/274

(under subclass 272) Compounds wherein a substituent attached to the ring of the benzylidene group contains an OH bonded directly to carbon, or an ether, 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.

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