Figure 3.
The structure of benzoic acid derivatives (R1=R2=H—hydroxybenzoic acid; R1=OH, R2=H—protocatechuic acid; R1=OCH3, R2=H—vanillic acid; R1=R2=OH—gallic acid; R1=R2=OCH3—syringic acid).
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.