| 摘要 |
The present invention relates to the new crystalline solid form XI of Tigecycline and a process of preparing the same. Form XI of Tigecycline is particularly suitable for the isolation of Tigecycline in the last step of the synthesis of Tigecycline. Further the present invention relates to a process of preparing amorphous Tigecycline by spray drying form XI or another crystalline form of Tigecycline.
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