US PATENT SUBCLASS 560 / 256
.~.~.~.~ Polycyclo-alicyclic ring system in alcohol moiety

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {17}
1  DF  .~ Carboxylic acid esters {14}
129  DF  .~.~ Acyclic acid moiety {9}
231  DD  .~.~.~ Unsubstituted acids of the acetic series {16}
256.~.~.~.~ Polycyclo-alicyclic ring system in alcohol moiety {1}
257  DF  .~.~.~.~.~> Nor- or homo- cyclopentanohydrophenanthrenes {1}

DEFINITION

Classification: 560/256

Polycyclo - alicyclic ring system in alcohol moiety:

(under subclass 231) Compounds wherein the alcohol moiety contains a polyalicyclic nucleus in which the rings are joined either through two ortho positioned carbons or through a carbon bridge or both.

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

SEE OR SEARCH CLASS

552, Organic Compounds,

653, for esters of Vitamin D compounds, cholecalciferols, activated 7-dehydrocholesterols, dihydrotachysterols, 3-5 cyclovitamin D compounds, etc.