Description: 534 organic compounds -- part of the class 532-570 series / 534 organic compounds -- part of the class 532-570 series/() organic compounds (class 532, subclass 1) (573) azo (682) plural hydroxy groups or esters thereof bonded directly to a monocyclic benzene ring (h of hydroxy may be replaced by a substituted or unsubstituted ammonium ion or metal) (683) azo bonded directly to the benzene ring (688) two azo groups attached indirectly to each other by nonionic bonding
Hierarchy/Derived subclasses
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Patent Apps in 534/688
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