US PATENT SUBCLASS 544 / 53
.~.~.~.~ 1,3-thiazines

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

Internet Version by PATENTEC © 1999      Terms of Use


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

*  DD  ORGANIC COMPOUNDS (Class 532, subclass 1) {1}
*  DD  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM, OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS (Class 540, subclass 1) {1}
1  DF  .~.~ Hetero ring is six-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazines, etc.) {6}
3  DF  .~.~.~ Six-membered hetero ring consists of oxygen, sulfur, nitrogen and carbon (e.g., oxathiazines, etc.) {7}
53.~.~.~.~ 1,3-thiazines {2}
54  DF  .~.~.~.~.~> Double bonded divalent chalcogen containing
55  DF  .~.~.~.~.~> Additional hetero ring containing

DEFINITION

Classification: 544/53

(under subclass 3) Compounds wherein the six-membered hetero ring has sulfur in the 1-position, nitrogen in the 3-position and carbon in the other four positions.

(1) Note. This subclass provides for compounds containing the following ring which may have double bonds. [figure]