| 564 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {1} |
| 1 | DF | .~ AMINO NITROGEN CONTAINING (E.G., UREA, SULFONAMIDES, NITROSAMINES, OXYAMINES, ETC., AND SALTS THEREOF) {37} |
| 305 | DF | .~.~ Benzene ring containing {24} |
| 315 | DF | .~.~.~ Two aryl rings or ring systems bonded directly to the same carbon {7} |
| 316 |  | .~.~.~.~ Amino nitrogen attached to the carbon by an acyclic carbon or chain {3} |
| 317 | DF | .~.~.~.~.~> Oxygen or sulfur is bonded directly to the carbon and is part of the chain {1} |
| 319 | DF | .~.~.~.~.~> Oxygen, carbonyl or carbon to carbon unsaturation in the chain; or ether, carbonyl, carbon to carbon unsaturation or hydroxy, bonded directly to carbon, is part of a substituent bonded directly to the acyclic carbon or chain (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal) |
| 320 | DF | .~.~.~.~.~> Hydroxy or ether oxygen bonded directly to the carbon (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal) |