US PATENT SUBCLASS 546 / 348
.~.~.~ Unsubstituted or hydrocarbyl substituted only, or salt thereof

Current as of: June, 1999
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546 /   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) {1}
1  DF  .~.~ Hetero ring is six-membered consisting of one nitrogen and five carbons {24}
348.~.~.~ Unsubstituted or hydrocarbyl substituted only, or salt thereof {3}
349  DF  .~.~.~.~> Alkylation or dealkylation process
350  DF  .~.~.~.~> Unsaturated hydrocarbyl side chain {2}
353  DF  .~.~.~.~> Purification or recovery

DEFINITION

Classification: 546/348

Unsubstituted or hydrocarbyl substituted only or salts thereof:

(under subclass 1) Compounds in which the six-membered hetero ring is unsubstituted or substituted by hydrocarbon radicals only, or salts thereof.

(1) Note. Hydrocarbon radicals consist of carbon and hydrogen only. A substituent containing any other atom would not be provided for herein.

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