Di(adenosine-5'-)penta-phosphate,trilithium salt

Formula: C₂₀H₂₆N₁₀O₂₂P₅Li₃
Molecular weight: 934.2 D (Ap5A: 916.4 D)
Appearance: White to slightly yellowish, amorphous powder
Solubility: Clear, colorless to slightly yellowish solution in water (c=10 mg/ml)
Ap5A-Li₃ (from P_organic): ≥91%
Ap5A (A₂₆₀, ε=26.4 [l x mmol^-1 x cm^-1]): ≥90%
Ap5A (from P_organic): ≥90%
Ap5A (HPLC): ≥95 area%
Li (flame photometric): 2.1±0.3%
Water (K. Fischer): ≤5%
P_total (ammonium vanadate): ≥15.2%
P_i (ammonium vanadate): ≤1.5%
Thin layer chromatography (PEI-cellulose, KH₂PO₄, 0.75 mol/l): Chromatographically homogeneous
A₂₅₀/A₂₆₀: 0.79±0.04
A₂₈₀/A₂₆₀: 0.21±0.03
A₂₉₀/A₂₆₀: 0.02±0.02
Stability: At +2 to +8°C within specification range for 24 months.