| 558 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {21} |
| 303 | DF | .~ Nitriles (i.e., compounds having cyano bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {21} |
| 308 | DF | .~.~ Processes for forming the cyano group {7} |
| 318 | DF | .~.~.~ Ammonia utilized {3} |
| 319 | DF | .~.~.~.~ And molecular oxygen or a molecular oxygen containing gas {2} |
| 320 | DF | .~.~.~.~.~ Acting on a compound containing acyclic or alicyclic carbon to carbon unsaturation {4} |
| 323 |  | .~.~.~.~.~.~ Molybdenum containing material utilized {1} |
| 324 | DF | .~.~.~.~.~.~.~> Bismuth containing material utilized |