| 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 |  | .~.~.~ Two aryl rings or ring systems bonded directly to the same carbon {7} |
| 316 | DF | .~.~.~.~> Amino nitrogen attached to the carbon by an acyclic carbon or chain {3} |
| 321 | DF | .~.~.~.~> Amino nitrogen bonded directly to the carbon |
| 322 | DF | .~.~.~.~> The carbon is a ring member of an alicyclic ring or ring system |
| 323 | DF | .~.~.~.~> Amino nitrogen attached to aryl ring or ring system by an acyclic carbon or chain {2} |
| 327 | DF | .~.~.~.~> Benzhydrols or benzthiols (i.e., -OH or -SH bonded directly to the carbon) |
| 328 | DF | .~.~.~.~> Benzophenones or benzothiophenones (i.e., the carbon is part of a carbonyl or thiocarbonyl) {1} |
| 330 | DF | .~.~.~.~> Diamino diphenyl methanes (i.e., two phenyls, each having amino nitrogen bonded directly thereto, bonded directly to the carbon) {3} |