ChEBI: 3-(3-hydroxyphenyl)propanoic acid is a monocarboxylic acid that is propionic acid carrying a 3-hydroxyphenyl substituent at C-3. It has a role as a human xenobiotic metabolite and an Escherichia coli metabolite. It derives from a propionic acid. It is a conjugate acid of a 3-(3-hydroxyphenyl)propanoate.