Guanine
[CAS NO.:] 73-40-5
Structural formula:

Molecular formular: C5H5N5O
Molecular weight: 151.13
Description: A white or cream white powder
Identification: Positive
Color or solution: Y5
Loss on drying: 0.5% max.
Assay(by HCLO4 titration): 98.0-102.0%
Purity(by HPLC): 99.0% min.
Single impurity: 0.5% max.
Ash: 0.2% max.
Particle size(<100μm): 99% min.
Heavy metals: 10ppm max.
Arsenic: 2ppm max.
Usage: key intermediate for Acyclovir,Gencyclovir Package: 25kg seaworthy fibre drum
Capacity: 50MT/month
Remarks: We also can offer other grade according to customer's requirement


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