| 548 / | 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) {4} |
| 100 | DF | .~.~ Hetero ring is five-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazoles, etc.) {18} |
| 300.1 |  | .~.~.~ 1,3-diazoles (including hydrogenated) {9} |
| 300.4 | DF | .~.~.~.~> Polycyclo ring system containing anthracene configured ring system having at least one double bond between ring members and having oxygen single bonded or any atom double bonded directly at the 9- or 10- positions (e.g., anthrone, anthraquinone, etc.) |
| 300.7 | DF | .~.~.~.~> Spiro {2} |
| 301.7 | DF | .~.~.~.~> Polycyclo ring system having the diazole ring as one the cyclos {2} |
| 311.1 | DF | .~.~.~.~> Additional hetero ring attached directly or indirectly to the diazole ring by nonionic bonding (e.g., 1,3-dioxolan-2-yl methyl-imidazole, etc.) {5} |
| 316.4 | DF | .~.~.~.~> Chalcogen bonded directly to ring carbon of the diazole ring (e.g., N-vinyl-N, N'ethylene urea, etc.) {9} |
| 326.5 | DF | .~.~.~.~> Nitrogen attached directly to the diazole ring by nonionic bonding {3} |
| 333.5 | DF | .~.~.~.~> Having -C(=X)-, wherein X is chalcogen, bonded directly to the diazole ring {2} |
| 335.1 | DF | .~.~.~.~> Two double bonds between ring members of the diazole ring (i.e., imidazole) {7} |
| 347.1 | DF | .~.~.~.~> One double bond between ring members of the diazole ring (i.e., imidazoline) {4} |