Compounds derived from
oxoacids RkE(=O)l(OH)m (
l ≠ 0) by replacing a double-bonded oxygen atom by
=NNR2, as in carbohydrazonic acids,
RC(OH)=NNH2 and sulfonohydrazonic acids,
RS(=O)(=NNH2)OH.
Source:
PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1341 (https://doi.org/10.1351/pac199567081307)