US PATENT SUBCLASS 540 / 352
.~.~.~.~ Five-membered hetero ring consisting of one nitrogen, one sulfur and three carbons as one of the cyclos of the polycyclo ring system


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

Internet Version by PATENTEC © 1999      Terms of Use



540 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS {6}
200  DF  .~.~ Hetero ring is four-membered containing nitrogen and having chalcogen double bonded directly to a ring carbon which is adjacent to the ring nitrogen {7}
203  DF  .~.~.~ Polycyclo ring system containing the hetero ring as one of the cyclos {4}
352.~.~.~.~ Five-membered hetero ring consisting of one nitrogen, one sulfur and three carbons as one of the cyclos of the polycyclo ring system {1}
353  DF  .~.~.~.~.~> Double bond between ring members of the five-membered hetero ring


DEFINITION

Classification: 540/352

(under subclass 203) Compounds wherein one of the cyclos of the polycyclo ring system is a five-membered hetero ring consisting of one nitrogen, one sulfur and three carbons.

(1) Note. An example of a compound provided for herein is: [figure]