By usage, the methylenediphenols,
HOC6H4CH2C6H4OH,
commonly
p,p-methylenediphenol, and their substitution products (generally derived from condensation
of two equivalent amounts of a
phenol with an
aldehyde or
ketone).
Source:
PAC, 1995, 67, 1307
(Glossary of class names of organic compounds and reactivity intermediates based on
structure (IUPAC Recommendations 1995))
on page 1323