US PATENT SUBCLASS 548 / 255
.~.~.~ 1,2,3-triazoles (including hydrogenated)

Current as of: June, 1999
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548 /   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) {4}
100  DF  .~.~ Hetero ring is five-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazoles, etc.) {18}
255.~.~.~ 1,2,3-triazoles (including hydrogenated) {2}
256  DF  .~.~.~.~> Polycyclo heterocyclic ring system containing ring oxygen
257  DF  .~.~.~.~> Polycyclo ring system having the triazole ring as one of the cyclos {3}

DEFINITION

Classification: 548/255

(under subclass 100) Compounds in which the five-membered hetero ring has nitrogens in the 1-, 2-, and 3-positions and carbons in the remaining two positions.

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