We could supply L-theanine,DL-theanine with purity over 99%,widely used in food,beverage and non-food insdustry. Product name: L-theanine Cas#: 3081-61-6 Chemical formula: C7H14N2O3 Visual:White crystal powder Assay:Min.99% Specific Rotation [±]20/D:+7.5-+8.5º Melting point:210-215 More details,samples and customization also available