hydrazide
hydrazide
Compounds derived from oxoacids R<small><sub><em>k</em></sub></small>E(=O)<small><sub><em>l</em></sub></small>(OH)<small><sub><em>m</em></sub></small> (<em>l</em> ≠ 0) by replacing ‒OH  by ‒NRNR<small><sub>2</sub></small> (R groups are commonly H). (IUPAC).