| 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} |
| 32 | DF | .~.~ Ureas (i.e., HNH-CO-HNH, wherein substitution may be made for hydrogen only) {9} |
| 47 | DF | .~.~.~ Benzene ring containing {2} |
| 48 |  | .~.~.~.~ Benzene ring bonded directly to urea nitrogen (i.e., anilides) {5} |
| 49 | DF | .~.~.~.~.~> The benzene ring is part of a substituent which contains sulfur |
| 50 | DF | .~.~.~.~.~> The benzene ring is part of a substituent which contains nitrogen {1} |
| 52 | DF | .~.~.~.~.~> The benzene ring is part of a substituent which contains oxygen |
| 53 | DF | .~.~.~.~.~> The benzene ring is part of a substituent which contains halogen bonded directly to carbon {1} |
| 55 | DF | .~.~.~.~.~> Plural benzene rings bonded directly to urea nitrogen |