Preparation method for Cefoxintin sodium
The invention discloses a preparation method for Cefoxintin sodium. The preparation method particularly comprises the steps of preparing acidic solution, decoloring, filtering and washing, performing crystallization for the first time, cultivating a crystal, performing crystallization again, perform...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a preparation method for Cefoxintin sodium. The preparation method particularly comprises the steps of preparing acidic solution, decoloring, filtering and washing, performing crystallization for the first time, cultivating a crystal, performing crystallization again, performing suction filtration and washing, and drying. The preparation method for the Cefoxintin sodium is simple and practicable. The prepared finished product has few solvent residues, high content and high color grade. |
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