We are offering l-threonine. product name: chemical name: l-threoninecas number: 72-19-5molecular formula: c4h9no3molecular weight: 119.12 application:l-threonine use glucose as the main raw material, by microbial fermentation, and then after membrane filtration, concentrated, crystaling and drying process from refining. With production of biological fermentation method, it is non-toxic , safety and reliablein , could be use in a variety of feed (including export-oriented farming enterprises feed). Threonine as a necessary amino acids, widely used in feed additives, food enhancer, pharmacal product, etc.