hydrazides

https://doi.org/10.1351/goldbook.H02879
Compounds derived from @O04374@ RkE(=O)l(OH)m (l ≠0) by replacing –OH by –NRNR2 (R groups are commonly H), as in carbohydrazides, RC(=O)NHNH2, sulfonohydrazides, RS(=O)2NHNH2, and phosphonic dihydrazides, RP(=O)(NHNH2)2.
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1340 [Terms] [Paper]