US PATENT SUBCLASS 549 / 492
.~.~.~.~.~ Nitrogen and the hetero ring are single bonded directly to the same acyclic saturated hydrocarbon group

Current as of: June, 1999
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549 /   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) {2}
200  DF  .~.~ Oxygen containing hetero ring (e.g., dioxirane, etc.) {16}
429  DF  .~.~.~ The hetero ring is five-membered {14}
491  DF  .~.~.~.~ Nitrogen attached indirectly to the hetero ring by nonionic bonding {2}
492.~.~.~.~.~ Nitrogen and the hetero ring are single bonded directly to the same acyclic saturated hydrocarbon group {3}
493  DF  .~.~.~.~.~.~> The nitrogen is bonded directly to a -C(=X)- group, wherein X is chalcogen
494  DF  .~.~.~.~.~.~> Having -C(=X)-, wherein X is chalcogen, attached indirectly to the hetero ring by nonionic bonding
495  DF  .~.~.~.~.~.~> Chalcogen attached indirectly to the hetero ring by acyclic nonionic bonding

DEFINITION

Classification: 549/492

(under subclass 491) Compounds wherein nitrogen and the hetero ring are single bonded directly to the same acyclic saturated hydrocarbon group.

(1) Note. The expression "acyclic saturated hydrocarbon group" refers to alkylene.

(2) Note. An example of a compound provided for herein is: [figure]