US PATENT SUBCLASS 544 / 370
.~.~.~.~.~.~.~.~ 1,3-diazole ring (including hydrogenated)


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}
224  DF  .~.~.~ The six-membered hetero ring consists of two nitrogens and four carbons (e.g., 1,2-diazines, etc.) {9}
336  DF  .~.~.~.~ 1,4-diazines {9}
358  DF  .~.~.~.~.~ Piperazines (i.e., fully hydrogenated 1,4-diazines) {12}
359  DF  .~.~.~.~.~.~ Additional hetero ring containing {4}
366  DF  .~.~.~.~.~.~.~ Five-membered hetero ring having two or more ring hetero atoms of which at least one is nitrogen {3}
370.~.~.~.~.~.~.~.~ 1,3-diazole ring (including hydrogenated)


DEFINITION

Classification: 544/370

1,3-diazole ring (including hydrogenated):

(under subclass 366) Compounds wherein the five-membered hetero ring has ring nitrogens in the 1- and 3-positions, and

ring carbons in the remaining three positions.