US PATENT SUBCLASS 552 / 525
.~.~.~ The sulfur is bonded directly at the 16- or 17-position

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
523  DF  .~.~ Sulfur bonded directly to the cyclopentanohydrophenanthrene ring system {2}
525.~.~.~ The sulfur is bonded directly at the 16- or 17-position

DEFINITION

Classification: 552/525

(under subclass 523) Compounds wherein the sulfur is bonded directly at the 16- or 17-position of the cyclopentanohydrophenanthrene ring system.