US PATENT SUBCLASS 549 / 552
.~.~.~.~.~ Cyano or nitrogen and the hetero ring bonded directly to the same carbon

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}
512  DF  .~.~.~ The hetero ring is three-membered consisting of one oxygen and two carbons {7}
551  DF  .~.~.~.~ Nitrogen attached indirectly to the hetero ring by nonionic bonding {2}
552.~.~.~.~.~ Cyano or nitrogen and the hetero ring bonded directly to the same carbon

DEFINITION

Classification: 549/552

(under subclass 551) Compounds wherein cyano (i.e., -C=N) or nitrogen and the oxirane ring are bonded directly to the same carbon.

(1) Note. Examples of compounds provided for herein are: [figure]

[figure]