Baicalin (Beta-D-Glucopyranosiduronic Acid, CAS 51059-44-0) is a naturally occurring flavone glycoside extracted from the root of Scutellaria baicalensis. As a well-characterized plant-derived compound, Baicalin is widely used in phytochemical, biochemical, and analytical research. With a purity level of ≥98% (HPLC), it serves as a reliable material for studies involving flavonoid metabolism, natural product chemistry, and quality control of botanical ingredients. Full analytical documentation including COA, HPLC, MS, and NMR is available to ensure traceability and consistency across research applications.