US PATENT SUBCLASS 564 / 273
.~.~.~.~.~ Substituent Q contains nitrogen bonded directly to carbon

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}
273.~.~.~.~.~ Substituent Q contains nitrogen bonded directly to carbon

DEFINITION

Classification: 564/273

(under subclass 272) Compounds wherein a substituent attached to the ring of the benzylidene group contains a nitrogen which is directly bonded to carbon.

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