A kind of indole alkaloids. Molecular formula C33H40N2O9. Exists in rauwolfia a variety of plants, in the vomiting Laura fu wood content up to 1%. Colorless ribbed crystals. Melting point of 264 ~ 265 ℃ (decomposition), than the rotation to 117.7 ° (chloroform, C = 1). Soluble in chloroform, dichloromethane, glacial acetic acid, soluble in benzene, ethyl acetate, slightly soluble in acetone, methanol, ethanol, ethyl ether, acetic acid and citric acid in dilute aqueous solution. Solution of reserpine place turn yellow over time, and a significant fluorescence, fluorescence enhancement after adding acid and exposure. Reserpine is a weak base and its hydrochloride is colorless crystals, melting point 224 ℃ (decomposition); Pyridine compounds for yellow crystal, melting point of 183 ~ 186 ℃ (decomposition). Reserpine can lower blood pressure and slow heart rate, slow, gentle and persistent, lasting stability for the central nervous system, is a kind of very good sedatives.
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