Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
UV spectra of p-coumaric acid and metabolic derivatives: 1, 60 μM p-coumaric acid; 2, 60 μM 4-vinyl phenol; 3, 60 μM phloretic acid; 4, 60 μM 4-ethyl phenol; 5, 30 μM 4-vinyl phenol with 30 μM phloretic acid. Arrows point to the maximum absorbance for each compound.
