US PATENT SUBCLASS 564 / 324
.~.~.~.~.~ Oxygen or sulfur is bonded directly to the aryl ring or ring system and is part of the chain

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}
315  DF  .~.~.~ Two aryl rings or ring systems bonded directly to the same carbon {7}
323  DF  .~.~.~.~ Amino nitrogen attached to aryl ring or ring system by an acyclic carbon or chain {2}
324.~.~.~.~.~ Oxygen or sulfur is bonded directly to the aryl ring or ring system and is part of the chain {1}
325  DF  .~.~.~.~.~.~> Additional similar chain

DEFINITION

Classification: 564/324

(under subclass 323) Compounds wherein oxygen or sulfur bonded directly to the benzene ring or ring system is part of the acyclic chain which contains the amino nitrogen.

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