| 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} |
| 314 | DF | .~.~.~ Carbonyl bonded directly to the six-membered hetero ring {4} |
| 315 | DF | .~.~.~.~ At 3-position {2} |
| 318 | DF | .~.~.~.~.~ The carbonyl is in a -COO- group {3} |
| 319 | DF | .~.~.~.~.~.~ Processes of obtaining nicotinic acid per se or a derivative of nicotinic acid wherein the only substituents are -COO- groups, or salt thereof {1} |
| 320 |  | .~.~.~.~.~.~.~ By oxidation |