US PATENT SUBCLASS 534 / 654
.~.~.~ The polycyclo ring system consists of three six-membered cyclos and has plural oxygens bonded directly thereto

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

*  DD  ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1) {8}
573  DF  .~ Azo {51}
653  DF  .~.~ Polycyclo carbocyclic ring system having at least three cyclos {3}
654.~.~.~ The polycyclo ring system consists of three six-membered cyclos and has plural oxygens bonded directly thereto {2}
655  DF  .~.~.~.~> Hetero ring containing
656  DF  .~.~.~.~> At least two such ring systems having plural oxygens bonded directly thereto

DEFINITION

Classification: 534/654

(under subclass 653) Compounds in which the polycyclo carbocyclic ring system consists of three six-membered cyclos and has plural oxygens bonded directly to it.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]