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hydrazide

hydrazide Chem.
  (ˈhaɪdrəzaɪd)
  [f. hydrazine + -ide.]
  Any compound which may be represented as R·CO·NH·NH2; also, any derivative of such a compound in which univalent radicals replace one or more of the hydrogen atoms.

1888 Jrnl. Chem. Soc. LIV. 686 Malonyl hydrazide, CH2(CO·NH·NHPh)2,..crystallises..in white leaflets. 1955 Z. E. Jolles in E. H. Rodd Chem. Carbon Compounds IIIa. vi. 320 Hydrazo compounds and hydrazides yield the corresponding azo derivatives by oxidation.

Oxford English Dictionary

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