US PATENT SUBCLASS 564 / 248
.~.~ Containing nitrogen double 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.~.~ Containing nitrogen double bonded directly to carbon {8}
249  DF  .~.~.~> Azines (i.e., HCH=N-N=HCH, wherein substitution may be made for hydrogen)
250  DF  .~.~.~> Hydrazones (i.e., HCH=N-HNH, wherein substitution may be made for hydrogen only) {1}
252  DF  .~.~.~> Carbodiimides (i.e., HN=C=NH, wherein substitution may be made for hydrogen only)
253  DF  .~.~.~> Oximes (HCH=N-OH, i.e., wherein substitution may be made for hydrogen only) {12}
269  DF  .~.~.~> Nitrogen double bonded and two rings bonded directly to the same acyclic carbon (e.g., auramines, etc.)
270  DF  .~.~.~> Polycyclo ring system
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}
278  DF  .~.~.~> Aldimines or ketimines which are acyclic {1}

DEFINITION

Classification: 564/248

(under subclass 1) Compounds which are characterized by the presence of the grouping below and correspond in constitution to those formed by reacting an aldehyde or ketone with ammonia or an amino nitrogen containing compound. [figure]

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