 
        Entecavir CAS No. 142217-69-4
          Structural Formula:  
          Chemical name: 
          2-amino-9-[(1S,3R,4S)-4-hydroxyl-3-methylol-2-methylene  cyclopentyl]1,9-di-H-6H-purine-6-one-hydrate
          Molecular Formula:C12H15N5O3H2O
Molecular WeighT:295.3
Quality Index:In-House Standard 
          Appearance:off-white to white crystallization powder 
          Assay: more than 99% 
          Single impurity: NMT0.1% 
          Total impurity: NMT0.3% 
Application: Anti Virus B Hepatic Disease
Packaging: 50-100g//aluminum foil bag
Storage: room temperature, keep in dry cool place