US PATENT SUBCLASS 564 / 175
.~.~.~.~.~ Oxygen, bonded directly to the benzene ring, is part of an acyclic chain between the benzene ring and the carbonyl

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}
123  DF  .~.~ Carboxamides (i.e., Q-CO-HNH, wherein Q is a substituent having carbon bonded directly to the carbonyl or is hydrogen and wherein any substituent replacing one or both hydrogens shown will be referred to as E) {14}
161  DF  .~.~.~ Substituent Q contains benzene ring {7}
170  DF  .~.~.~.~ Hydroxy, bonded directly to carbon, or ether in substituent Q (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal) {3}
175.~.~.~.~.~ Oxygen, bonded directly to the benzene ring, is part of an acyclic chain between the benzene ring and the carbonyl

DEFINITION

Classification: 564/175

(under subclass 170) Compounds wherein the carboxylic acid residue contains oxygen which is directly bonded to a benzene ring and is part of an acyclic chain which also contains the acid carbonyl group.

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