| 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 |  | .~.~ Hetero ring is six-membered consisting of one nitrogen and five carbons {24} |
| 2 | DF | .~.~.~> Heavy metal or aluminum containing {8} |
| 13 | DF | .~.~.~> Boron containing |
| 14 | DF | .~.~.~> Silicon containing |
| 15 | DF | .~.~.~> Spiro {1} |
| 21 | DF | .~.~.~> Phosphorus attached directly to the six-membered hetero ring by nonionic bonding |
| 22 | DF | .~.~.~> Phosphorus attached indirectly to the six-membered hetero ring by nonionic bonding {2} |
| 26 | DF | .~.~.~> Polycyclo ring system having the six-membered hetero ring as one of the cyclos {9} |
| 184 | DF | .~.~.~> Piperidines {8} |
| 249 | DF | .~.~.~> Process of forming partially hydrogenated pyridine ring |
| 250 | DF | .~.~.~> Process of forming pyridine ring {1} |
| 255 | DF | .~.~.~> Plural pyridine or partially hydrogenated pyridine rings {6} |
| 268.1 | DF | .~.~.~> Additional hetero ring containing {4} |
| 285 | DF | .~.~.~> Polycyclo-carbocyclic ring system having at least three cyclos |
| 286 | DF | .~.~.~> Cyano bonded directly to the six-membered hetero ring {3} |
| 290 | DF | .~.~.~> Chalcogen bonded directly to ring carbon of the six-membered hetero ring {9} |
| 304 | DF | .~.~.~> Nitrogen attached directly to the six-membered hetero ring by nonionic bonding {7} |
| 313 | DF | .~.~.~> Thiocarbonyl bonded directly to the six-membered hetero ring |
| 314 | DF | .~.~.~> Carbonyl bonded directly to the six-membered hetero ring {4} |
| 329 | DF | .~.~.~> Nitrogen attached indirectly to the six-membered hetero ring by nonionic bonding {5} |
| 339 | DF | .~.~.~> Chalcogen attached indirectly to the six-membered hetero ring by nonionic bonding (e.g., sulfato betaines, etc.) {3} |
| 345 | DF | .~.~.~> Halogen attached directly to the six-membered hetero ring by nonionic bonding |
| 346 | DF | .~.~.~> Halogen attached indirectly to the six-membered hetero ring by nonionic bonding |
| 347 | DF | .~.~.~> The ring nitrogen of the six-membered hetero ring is pentavalent (e.g., quaternary pyridinium salts, etc.) |
| 348 | DF | .~.~.~> Unsubstituted or hydrocarbyl substituted only, or salt thereof {3} |