2,6-Dimethoxyphenol-d6 (Syringol-d6) is deuterated labeled 2,6-Dimethoxyphenol (HY-W003972). 2,6-Dimethoxyphenol is a phenolic compound that scavenges free radicals and exhibits antioxidant activity. 2,6-Dimethoxyphenol is the substrate for determining laccase activity[1][2].