US PATENT SUBCLASS 554 / 217
.~.~.~.~ Plural oxygens bonded directly to the ring


Current as of: June, 1999
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554 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ Fatty compounds having an acid moiety which contains the carbonyl of a carboxylic acid, salt, ester, or amide group bonded directly to one end of an acyclic chain of at least seven (7) uninterrupted carbons, wherein any additional carbonyl in the acid moiety is (1) part of an aldehyde or ketone group, (2) bonded directly to a noncarbon atom which is between the additional carbonyl and the chain, or (3) attached indirectly to the chain via ionic bonding {23}
213  DF  .~.~ Additional oxygen in the acid moiety (e.g., hydroxystearic acid, etc.) {3}
214  DF  .~.~.~ Alicyclic ring in the acid moiety (e.g., prostaglandin analog, etc.) {2}
217.~.~.~.~ Plural oxygens bonded directly to the ring


DEFINITION

Classification: 554/217

(under subclass 214) Compounds wherein two or more oxygens are bonded directly to the alicyclic ring.

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