Salts of
O-hydronated urea, having the structure
[HOC(=NH2)NH2]+X− (and
O- and
N- hydrocarbyl derivatives).
Source:
PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1374 (https://doi.org/10.1351/pac199567081307)