Crystalline form of Adefovir dipivoxil and preparing process thereof

Crystalline form of Adefovir dipivoxil and preparing process thereof

  • CN 1,303,089 C
  • Filed: 11/19/2002
  • Issued: 03/07/2007
  • Est. Priority Date: 11/19/2002
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of adefovir dipivoxil crystal is characterized in that using Cu-K α

  • radiation, and λ

    =1.5405 

    is as follows to spend the X-ray powder diffraction spectral signature that 2 θ

    represent;



    I/I 03.68 1007.36 257.84 4910.12 812.36 1114.80 915.16 2016.36 1417.28 3118.04 2520.16 1420.44 921.28 1122.28 2726.08 10Infrared absorption pattern is at 595cm -1, 653cm -1, 715cm -1, 768cm -1, 799cm -1, 816cm -1, 834cm -1, 852cm -1, 901cm -1, 959cm -1, 1001cm -1, 1032cm -1, 1054cm -1, 1130cm -1, 1153cm -1, 1204cm -1, 1241cm -1, 1258cm -1, 1280cm -1, 1304cm -1, 1326cm -1, 1416cm -1, 1482cm -1, 1572cm -1, 1593cm -1, 1652cm -1, 1754cm -1, 2877cm -1, 2936cm -1, 2976cm -1, 3159cm -1, 3321cm -1There is absorption peak at the place;

    Its DSC endothermic transition is at 95 ℃

    .

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×