| 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} |
| 17 | DF | .~.~ Thioureas (i.e., HNH-C(=S)-HNH, wherein substitution may be made for hydrogen only) {7} |
| 26 |  | .~.~.~ Benzene ring containing {3} |
| 27 | DF | .~.~.~.~> Nitrogen attached indirectly to the thiocarbonyl by nonionic bonding |
| 28 | DF | .~.~.~.~> Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal) |
| 29 | DF | .~.~.~.~> Halogen attached indirectly to the thiocarbonyl by nonionic bonding |