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Cas: [32619-42-4] oleuropein

English Name: Oleuropein

Alias: oleuropein

Chemical name: [2S- (2,3E, 4)]-3-Ethylidene-2- (-D-glucopyranosyloxy) -3,4-dihydro-5- (methoxycarbonyl) -2H-pyran-4-acetic acid 2- (3,4-dihydroxyphenyl) ethyl ester

Ingredients: classification of secoiridoidMolecular

weight: 540.51.

Molecular formula: C25H32O13

Physical properties: the tiny crystals (ethyl acetate). The melting point of 87 ~ 89 ?. Hygroscopic. Optical rotation of -147 ° (c=1, water, ethanol or isopropanol), assumes the mutarotation, polarimetry -127 ° (9h, water), soluble in ethanol, acetone, acetic acid, 5%NaOH solution, soluble in water, alcohol, ethyl acetate, butyl acetate, almost insoluble in ether, petroleum ether, chloroform, carbon tetrachloride. This product is easy to absorb moisture, exposed to air and sunlight will break down, suggest that at low temperature in the dark condition sealed. The main specifications: 20%, 40%.