NADPH tetrasodium salt 10 041 939 103 Cofactor for glutamate dehydrogenase. Application Use NADPH as a cofactor in diagnostic tests for ammonia, urea and creatinine. Benefits Rely on the proven diagnostic quality of this product. CAS: 53-57-6 Properties Formula: C 21 H 26 N 7 O 17 P 3 Na 4 Molecular weight: 833.4 D (NADPH: 745.4 D) Specification Appearance: White to slightly yellowish amorphous powder Particle size (screen analysis according to Ph.Eur., US mesh <30): ≥95% Solubility: Clear, colorless to slightly yellowish solution in water (c=50 mg/ml) NADPH-Na 4 (calculated from content found enzymatically, based on dry weight): ≥97% NADPH (enzymatically, A 340 ): ≥79% NADPH (A 340 , ε=6.3 [l x mmol -1 x cm -1 ]): ≥0 79% NADPH (A 260 , ε=15 [l x mmol -1 x cm -1 ]): ≥80% NADPH (HPLC): ≥95 area% Na (flame photometric): 11±1% Water (K. Fischer): ≤6% NADH (HPLC): ≤0.5 area% NADP (HPLC): ≤0.5 area% NADP (enzymatically): ≤0.5% Nicotinic acid amide: ≤2 area% Ethanol (GC): ≤3% A 260 /A 340 : 2.32-2.65 Stability: At +2 to +8°C within specification range for 12 months. Store dry.