Original plant: Lycoris radiata CAS number: 1953-4-4 Assay (by HPLC): 98% Molecular Formula: C17H21NO3旽Br Molecular Weight: 368.27 Melting point: 258℃~259℃ Solubility: Soluble in water and slightly in alcohol Pharmacology: Galanthamine is an effective, competitive and reversible acetylcholin esterase inhibitor, especially using in curing the lightly or moderate older stupid sickness.