Appearance: White to off-white crystalline power
Molecular formula: Molecular formula: C13H20N6O4.HCL
Molecular weight: 360.80
CAS NO.: 124832-27-5
Quality Standard: CP2005

1. Specific optical rotation:-8.5 --11.5 degree
2. Absorption coefficient: 360 - 390
3. Acidity: 4.6 - 6.0
4. Related substance: 2.0%
5. Limit for Aciclovir: <=1.5%
6. Loss on drying: <=8.0%
7. Residue on ignition: <=0.1%
8. Heavy metals: <=20ppm
9. Assay: >=98.0%