Description: - A unique collection of 747 tobacco monomer compounds for high throughput screening and high content screening;- Provide biological information on the molecular structure, biological activity, target pathway of the product, providing theoretical direction and research basis for screening;- Diversified structures, including flavonoids, alkaloids, terpenoids and many other compound types, with detailed and well-classified information.- NMR, HPLC/LCMS and other detection techniques to ensure the correct structure, high purity of the product, and to reduce false positives.