Patents Assigned to Zhejiang Charioteer Pharmaceutical CO., LTD
  • Method for preparing acyclovir 2/3 hydrate
    Patent number: 9084792
    Abstract: Preparation of acyclovir 2/3 hydrate comprises mixing acyclovir with water at weight ratio of 1:5˜50, dissolving at 50˜100° C., filtering, cooling filtrate at 0˜30° C. to precipitate crystal, collecting the crystal by filtration, and drying the crystal at 0˜150° C. for 0.5˜24 hours to obtain acyclovir 2/3 hydrate. The preparation process is simple and suitable for industrial production. The prepared product has good and stable crystal form.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: July 21, 2015
    Assignee: Zhejiang Charioteer Pharmaceutical Co., Ltd.
    Inventors: Tong Pu, Yi Fan, Tian Chen, Ming Lei, Naixing Wang, Zhen Yang, Jianming Yang
  • Method for Preparing Acyclovir 2/3 Hydrate
    Publication number: 20120010408
    Abstract: Preparation of acyclovir 2/3 hydrate comprises mixing acyclovir with water at weight ratio of 1:5˜50, dissolving at 50˜100° C., filtering, cooling filtrate at 0˜30° C. to precipitate crystal, collecting the crystal by filtration, and drying the crystal at 0˜150° C. for 0.5˜24 hours to obtain acyclovir 2/3 hydrate. The preparation process is simple and suitable for industrial production. The prepared product has good and stable crystal form.
    Type: Application
    Filed: March 17, 2010
    Publication date: January 12, 2012
    Applicant: Zhejiang Charioteer Pharmaceutical CO., LTD
    Inventors: Tong Pu, Yi Fan, Tian Chen, Ming Lei, Naixing Wang, Zhen Yang