Formula: C₂₁H₂₈N₇O₁₇P₃

Purity: ≧ 93% when determined by enzymatic analysis with glucose-6-phosphate dehydrogenase at pH 7.5

*G6PDH = Glucose-6-phosphate dehydrogenase (yeast)(EC 1.1.1.49.)

Sodium Content: 3.0 ± 1.5% by atomic absorption spectrophotometry

Water Content: < 8% by Karl Fisher method

Spectral Analysis:
1. ε at 260 nm and pH7.5: (18.0 ± 0.8) x 10³L.mole^-1.cm^-1
2. ε when reduced with G6PDH* at 340nm and pH7.5:
(6.2 ± 0.3) x 10³L.mole^-1.cm^-1
3. Ratios at pH 7.5: A₂₅₀/A₂₆₀ (0.83 ± 0.03)
A₂₈₀/A₂₆₀ (0.21 ± 0.02)
4. Ratio when reduced with G6PDH* at pH 7.5:
A₃₄₀/A₂₆₀ (0.43 ± 0.02)

Condition for Storage:
Keep tightly stoppered in the dark below 5°C.
Moisture will reduce purity.
For prolonged storage, keep below -20°C.

Shipping Condition: Refrigerate