NAD Grade I, free acid Roche

Absorbance coefficients: 17.6 x 10³ l x mol^-1 x cm^-1 at 260 nm, 5.9 x 10³ l x mol^-1 x cm^-1 at 333 nm (CN complex)
Absorbance maximum: 260 nm
Formula: C₂₁H₂₇N₇O₁₄P₂
Molecular weight: M_r = 663.4
pH value in water: approximately 3.0 (50 mg/ml)
Stability:
Solid: at +2 to +8°C, stored dry
Solution: 10 mg/ml in aqueous solution, contains at least 99% NAD after 4 weeks at +2 to +8°C

Lyophilizate

Purity: 100% β-NAD based on dry weight (enzymatically, CN-complex and absorbance); A_250 nm - A_260 nm : 0.83 ± 0.02, A_280 nm - A_260 nm : 0.22 ± 0.02
Absence of contaminants: LDH inhibitors are not detectable
Organic solvents: ≤0.05% (GC)