Dihydric
alcohols, also known as
diols, in which the two hydroxy groups are on different carbon atoms, usually but not necessarily
adjacent. E.g.
HOCH2CH2OH
'
ethylene glycol' (ethane-1,2-diol),
HO[CH2]4OH
butane-1,4-diol.
Source:
PAC, 1995, 67, 1307
(Glossary of class names of organic compounds and reactivity intermediates based on
structure (IUPAC Recommendations 1995))
on page 1337