Assay (HPLC): ≥ 95.0%.
Appearance: White powder, hygroscopic.
Identification (UV): λmax = 259 nm (in water).
Purity (HPLC): ≥ 95.0% by area.
Loss on Drying: ≤ 5.0% (at 105°C for 2 hours).
Residue on Ignition: ≤ 0.5%.
Heavy Metals (as Pb): ≤ 20 ppm.
ADP: ≤ 3.0%.
AMP: ≤ 1.0%.
Adenosine: ≤ 0.5%.
pH (1% solution): 6.0-7.5.
Water Content (Karl Fischer): ≤ 10.0%.
Enzymatic Activity: Suitable for energy transfer reactions.
UV Ratio: A250/A260 = 0.79-0.83, A280/A260 = 0.13-0.17.
Biological Activity: ≥ 90% of reference standard.