| Items | Specifications |
| Appearance | White or almost white crystalline powder |
| Loss on drying | ≤0.5% |
| Residue on ignition | ≤0.5% |
| Heavy metals | ≤20ppm |
| Assay(UV) | 98.0-102.0% |
| Purity(HPLC) | ≥98.0% |
| Guanine | ≤0.10% |
| Each of Inosine, N-Acetyl hypoxanthine and other impurities | ≤0.5% |
