USD $10.00-10.00 / Gram
USD $10.00-10.00 / Gram
USD $10.00-10.00 / Gram
USD $8.20-8.80 / Kilogram
USD $10.00-10.00 / Gram
USD $1.00-10.00 / Kilogram
USD $9.00-99.00 / Kilogram
β-nadh, grade i
maximum absorption wave length: 260nm and 340nm
items |
specification |
testing results |
appearance |
white to yellowish lyophilized powder |
conform |
purity (hplc),% |
≥98 |
98.3 |
enzymatic assay (adh),% |
≥98 |
98.2 |
nadh contents (anhydrous basis),% |
- |
93 |
na contents,% |
6.5±0.5 |
6.4 |
water contents,% |
<5 |
4.0 |
organic solvents(methanol, ethanol, acetone, isopropanol) determined by gc,% |
each<0.1 |
nd |
nadh (a340,ε= 6.3 (1×mmol-1×cm-1),% |
≥90 |
95.2 |
nadh (a260,ε= 14.3 (1×mmol-1×cm-1),% |
≥90 |
95.1 |
a250/a260 |
0.82±0.03 |
0.80 |
a280/a260 |
0.23±0.02 |
0.23 |
a340/a260 |
0.42±0.01 |
0.44 |
ph value in water(100mg/ml) |
7.5-9.0 |
8.03 |