
923.2 - Compounds X=N-N=Y (where X is different from Y) are named as hydrazones NH2NY substituted by an alkylidene, cycloalkylidene, or bivalent heterocyclic radical X=. The group Y is that one of the pair X, Y that carries the substituent with priority for citation as suffix, or, if that is not decisive, is the senior.Examples to Rule C-923.1
See Recommendations'93 R-5.6.6, R-5.7.8.4Example to Rule C-923.2
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