DL-m-Tyrosine-d3 is the deuterium labeled DL-m-Tyrosine (HY-W001940). DL-m-Tyrosine is a non-protein amino acid. DL-m-Tyrosine inhibits microbial growth and spore formation. DL-m-Tyrosine also inhibits root growth in various plants, such as lettuce and Arabidopsis. DL-m-Tyrosine, when used in combination with Carbidopa (HY-B0311), has a potent antihypertensive effect. DL-m-Tyrosine can be used in research on biopesticide design.