US PATENT SUBCLASS 514 / 181
.~.~.~.~ 21-position substituted

Current as of: June, 1999
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514 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

1  DF  DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29}
169  DF  .~ Cyclopentanohydrophenanthrene ring system DOAI {5}
177  DF  .~.~ Oxygen double bonded to a ring carbon of the cyclopentanohydrophenanthrene ring system {1}
178  DF  .~.~.~ Oxygen single bonded to a ring carbon of the cyclopentanohydrophenanthrene ring system {2}
181.~.~.~.~ 21-position substituted

DEFINITION

Classification: 514/181

21-position substituted:

(under subclass 178) Subject matter wherein the carbon in the 21 position is directly bonded to an atom other than carbon or hydrogen.

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