Preparation process of salicin comparison product

A preparation process, a technology for crude salicin, applied in the preparation of sugar derivatives, sugar derivatives, sugar derivatives and other directions
CN102863483AInactive Publication Date: 2013-01-09CHENGDU QIANKUN VETERINARY PHARMA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDU QIANKUN VETERINARY PHARMA
Publication Date
2013-01-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation process of a salicin comparison product. The preparation process includes following steps of extracting salicin from poplar flowers; preliminarily separating the salicin by using macroporous resins; extracting n-butanol; separating and purifying the salicin by means of a normal phase silica gel method; and recrystallizing the salicin. Compared with preparation processes in prior art, the preparation process of the salicin comparison product can well meet requirements of traditional Chinese medicine standard products.
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Description

technical field

[0001] The invention relates to the field of preparation of a reference substance, in particular to a preparation process of a salicin reference substance. Background technique

[0002] Salicin is white crystal; taste bitter; melting point 199~202℃, specific optical rotation [α] 厍-45.6° (0.6g / 100cm3 absolute ethanol); soluble in water, easily soluble in boiling water, insoluble Soluble in ethanol (1:90), insoluble in ether or chloroform, but soluble in alkali solution, pyridine or glacial acetic acid, its aqueous solution has a neutral reaction, there is no free phenolic hydroxyl group in the molecule, and it belongs to phenolic glycoside compounds; Or hydrolyzed by amygdalin to produce glucose and salicyl alcohol. The molecular formula of salicyl alcohol is C7H8O2; it is orthorhombic colorless needle crystal; the melting point is 86-87°C; it sublimes when heated to 100°C; it is soluble in water and benzene, easily soluble in ethanol, ether, and chloroform; ...

Claims

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