534 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
* | DD | ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1) {8} |
10 | DF | .~ RADIOACTIVE METAL CONTAINING (At. No. 43, 61 or 84+; or radioactive isotope of another metal) {2} |
11 | DF | .~.~ Actinide series metal (At. No. 89+) {1} |
12 | DF | .~.~.~ Containing -C(=X)-, wherein X is chalcogen (e.g., carbonyl containing, etc.) {1} |
13 | .~.~.~.~ The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens |