546 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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* | 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 | DF | .~.~.~ Unsubstituted or hydrocarbyl substituted only, or salt thereof {3} |
350 | | .~.~.~.~ Unsaturated hydrocarbyl side chain {2} |
351 | DF | .~.~.~.~.~> Stabilized alkenyl pyridines |
352 | DF | .~.~.~.~.~> Process of forming the unsaturated hydrocarbyl side chain |