US PATENT SUBCLASS 548 / 338.5
.~.~.~.~.~.~.~ The chalcogen is sulfur or sulfur attached indirectly to the -C(=X)- group by acyclic nonionic bonding


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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}
338.1  DF  .~.~.~.~.~.~ Having -C(=X)-, wherein X is chalcogen, bonded directly to the nitrogen {1}
338.5.~.~.~.~.~.~.~ The chalcogen is sulfur or sulfur attached indirectly to the -C(=X)- group by acyclic nonionic bonding


DEFINITION

Classification: 548/338.5

(under subclass 338.1) Compounds in which sulfur is attached indirectly to the group by acyclic nonionic bonding or the chalcogen of the group is sulfur.

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