US PATENT SUBCLASS 548 / 336.5
.~.~.~.~.~.~.~ Having a -C=N group bonded directly to the nitrogen (e.g., N-cyano-N'- methyl-N~-{2-(4-methyl-5-imidazolyl)-methylthio]-ethyl}g nidine, etc.)


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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}
335.5  DF  .~.~.~.~.~ Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding {4}
336.1  DF  .~.~.~.~.~.~ The nitrogen is multiply bonded to carbon {2}
336.5.~.~.~.~.~.~.~ Having a -C=N group bonded directly to the nitrogen (e.g., N-cyano-N'- methyl-N~-{2-(4-methyl-5-imidazolyl)-methylthio]-ethyl}g nidine, etc.)


DEFINITION

Classification: 548/336.5

(under subclass 336.1) Compounds wherein the nitrogen is bonded directly to a -CN group.

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