A white or almost white crystalline powder

Identification

conforms to the ref.IR spectrum

Loss on drying

≤0.50%

Residue on ignition

≤0.50%

Heavy metals

≤20ppm

Related substances
(HPLC area)

Guanine:≤0.1%

Inosine:≤0.50%

N-Acetylhypoxanthine:≤0.50%

Any unspecified impurity:≤0.50%

Assay(UV)

98.00-102.00%

Purity(HPLC)

≥98.00%