562 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
* | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {41} |
624 | .~ Imidic acids, chalcogen analogs or salts thereof (i.e., compounds having the group -N-C(XH)-, wherein X is chalcogen and the hydrogen may be replaced by a group IA or IIA light metal, or by substituted or unsubstituted ammonium) |