US PATENT SUBCLASS 552 / 539
.~.~ Halomethyl bonded directly to the cyclopentanohydrophenanthrene ring system (e.g., 16-trifluoromethyl progesterones, etc.)

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

*  DD  ORGANIC COMPOUNDS (Class 532, subclass 1) {11}
502  DF  .~ Cyclopentanohydrophenanthrene ring system containing {21}
539.~.~ Halomethyl bonded directly to the cyclopentanohydrophenanthrene ring system (e.g., 16-trifluoromethyl progesterones, etc.)

DEFINITION

Classification: 552/539

(under subclass 502) Compounds wherein halomethyl is bonded directly to the cyclopentanohydrophenanthrene ring system.

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