Baicalin  (CAS: 21967-41-9) is a tetracyclic triterpenoid saponin extracted from the roots of Astragalus membranaceus (Fabaceae family). As the signature active component of Astragalus, it exhibits significant immunomodulatory, anti-aging, and organ-protective effects. It is listed in the Chinese Pharmacopoeia as a quality control marker for Astragalus and recognized as an immune enhancer in the EU Traditional Herbal Medicine Monograph (EMA/HMPC/39435/2015).

Product Name: Baicalin

IUPAC Name: (3β,6α,16β,20R,24S)-20,24-Epoxy-3-(β-D-xylopyranosyloxy)-16,25-dihydroxy-9,19-cyclolanostane-6-yl β-D-glucopyranoside

CAS No.​: 21967-41-9

Molecular Formula: C₄₁H₆₈O₁₄