| 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} |
| 2 |  | .~.~.~ Heavy metal or aluminum containing {8} |
| 3 | DF | .~.~.~.~> Arsenic containing |
| 4 | DF | .~.~.~.~> The metal bonded directly to carbon, which carbon is a ring carbon of the six-membered hetero ring or which carbon is attached directly or indirectly to the six-membered hetero ring by nonionic bonding |
| 5 | DF | .~.~.~.~> The metal is bonded directly to chalcogen of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens, which group is attached directly or indirectly to the six-membered hetero ring by nonionic bonding |
| 6 | DF | .~.~.~.~> The metal is bonded directly to chalcogen which chalcogen is attached directly or indirectly to the six-membered hetero ring by nonionic bonding {1} |
| 8 | DF | .~.~.~.~> The metal is in an anion and the six-membered hetero ring is in a cation {1} |
| 10 | DF | .~.~.~.~> Polycyclo ring system having the six-membered hetero ring as one of the cyclos |
| 11 | DF | .~.~.~.~> Piperidine containing |
| 12 | DF | .~.~.~.~> Azide or acyclic nitrogen containing |