US PATENT SUBCLASS 548 / 342.5
.~.~.~.~.~.~ Benzene ring or halogen attached directly to the diazole ring by nonionic bonding (e.g., 1-hydroxyethyl-4,5-diphenyl-imidazole; 1-ethyloxymethyl-2, 4,5-trichloro-imidazole, etc.)

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}
300.1  DF  .~.~.~ 1,3-diazoles (including hydrogenated) {9}
335.1  DF  .~.~.~.~ Two double bonds between ring members of the diazole ring (i.e., imidazole) {7}
341.1  DF  .~.~.~.~.~ Chalcogen attached indirectly to the diazole ring by acyclic nonionic bonding {3}
342.5.~.~.~.~.~.~ Benzene ring or halogen attached directly to the diazole ring by nonionic bonding (e.g., 1-hydroxyethyl-4,5-diphenyl-imidazole; 1-ethyloxymethyl-2, 4,5-trichloro-imidazole, etc.)

DEFINITION

Classification: 548/342.5

(under subclass 341.1) Compounds wherein halogen (i.e., F, Cl, Br, I, or At) or benzene ring is attached directly to the diazole ring by nonionic bonding.

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