Chemical name 2-Acetylamino-9-Acetyl-6-Hydroxy purine CAS NO. 3056-33-5 Formula C9H9N5O3 M.W. 235.20 Structure Main Specifications Description A almost white or brownish powder. Assay 93.0-103.0% Mono-acetyl Guanine ≤6.0% Guanine ≤1.0% Loss on drying ≤0.5% Usage For intermediate of antiviral API (acyclovir) or organic synthesis. Package 25 kg/drum，lined with plastic bag