| 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 |  | .~.~ Hetero ring is five-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazoles, etc.) {18} |
| 101 | DF | .~.~.~> Heavy metal or aluminum containing {8} |
| 110 | DF | .~.~.~> Boron or silicon containing |
| 111 | DF | .~.~.~> Phosphorus attached directly to the five-membered hetero ring by nonionic bonding |
| 112 | DF | .~.~.~> Phosphorus attached indirectly to the five-membered hetero ring by nonionic bonding {4} |
| 120 | DF | .~.~.~> The five-membered hetero ring contains ring selenium and is one of the cyclos in a polycyclo ring system {1} |
| 122 | DF | .~.~.~> The five-membered hetero ring consists of sulfur, oxygen, nitrogen, and carbon |
| 123 | DF | .~.~.~> Plural ring sulfurs in the five-membered hetero ring |
| 124 | DF | .~.~.~> Plural ring oxygens in the five-membered hetero ring |
| 125 | DF | .~.~.~> The five-membered hetero ring consists of chalcogen, plural nitrogens, and carbon {7} |
| 146 | DF | .~.~.~> 1,3-thiazoles (including hydrogenated) {7} |
| 206 | DF | .~.~.~> 1,2-thiazoles (including hydrogenated) {3} |
| 215 | DF | .~.~.~> 1,3-oxazoles (including hydrogenated) {6} |
| 240 | DF | .~.~.~> 1,2-oxazoles (including hydrogenated) {4} |
| 250 | DF | .~.~.~> Tetrazoles (including hydrogenated) {3} |
| 255 | DF | .~.~.~> 1,2,3-triazoles (including hydrogenated) {2} |
| 262.2 | DF | .~.~.~> 1,2,4-triazoles (including hydrogenated) {13} |
| 300.1 | DF | .~.~.~> 1,3-diazoles (including hydrogenated) {9} |
| 356.1 | DF | .~.~.~> 1,2-diazoles (including hydrogenated) {8} |