| 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} |
| 225 | DF | .~.~ Amidines (i.e., HN=CH-HNH, wherein substition may be made for hydrogen only) {5} |
| 244 |  | .~.~.~ Benzene ring containing {3} |
| 245 | DF | .~.~.~.~> N(prime)-aryl formimidines (i.e., benzene-N=CH-HNH, wherein substitution may be made for hydrogen, including those bonded directly to the benzene ring only) |
| 246 | DF | .~.~.~.~> Additional nitrogen attached indirectly to amidine nitrogen by nonionic bonding |
| 247 | 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) |