Injection for clearing heat, reducing phlegm and detoxifying
A technology of injection and form, which is applied in the direction of antipyretics, medical preparations with non-active ingredients, medical preparations containing active ingredients, etc., which can solve the problems of difficult curative effect and shortage of varieties
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preparation example 1a
[0107] Preparation Example 1a: Preparation of Ursocholic Acid
[0108] Obtain ursodeoxycholic acid according to the method of the [0097]-[0098] section of the CN101890048A specification sheet that is embodiment 3, after measuring, wherein contain 83.3% ursodeoxycholic acid and 11.4% chenodeoxycholic acid (bear / cheese =7.3; in the following examples, in the prepared total ursodeoxycholic acid, the content of ursodeoxycholic acid: the ratio of chenodeoxycholic acid content is in the range of 5-16).
preparation example 1b
[0109] Preparation Example 1b: Preparation of Ursocholic Acid
[0110] Prepare ursocholic acid according to the example method of the [0024] paragraph of the CN1947746B description; then re-purify again: after dissolving with ethyl acetate, add an appropriate amount of water therein to obtain a precipitate, and dry in vacuum to obtain ursocholic acid, which contains 84.3% ursodeoxycholic acid.
preparation example 1c
[0111] Preparation Example 1c: Preparation of Ursocholic Acid
[0112] Prepare ursocholic acid according to the method recorded in line 21-31 on page 2 of the CN1110150A instruction manual, and then repurify again: dissolve it with ethyl acetate, add an appropriate amount of water to it to obtain a precipitate, and dry it in a vacuum to obtain ursocholic acid, which contains 80.8% ursodeoxycholic acid.
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