US PATENT SUBCLASS 548 / 371.4
.~.~.~.~ Nitrogen attached directly to the diazole ring by nonionic bonding


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}
356.1  DF  .~.~.~ 1,2-diazoles (including hydrogenated) {8}
371.4.~.~.~.~ Nitrogen attached directly to the diazole ring by nonionic bonding {3}
371.7  DF  .~.~.~.~.~> Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding
372.1  DF  .~.~.~.~.~> Chalcogen attached directly to the nitrogen by nonionic bonding [e.g., N-(2-hydroxyethyl)-4-nitropyrazole, etc.]
372.5  DF  .~.~.~.~.~> Chalcogen attached indirectly to the diazole ring by acyclic nonionic bonding [e.g., 1-(2-hydroxyethyl)-3-amino-4(para-chlorophenyl)-pyrazole, etc.]


DEFINITION

Classification: 548/371.4

(under subclass 356.1) Compounds wherein nitrogen is attached directly to the ring by nonionic bonding.

(1) Note. This subclass contains, for example: [figure]