Low price for P-Nitrophenyl Beta-D-Lactopyranoside - 1,3-bis(tris(hydroxymethyl)methylamino) propane Cas: 64431-96-5 White crystal powder 99% – XD BIOCHEM
Low price for P-Nitrophenyl Beta-D-Lactopyranoside - 1,3-bis(tris(hydroxymethyl)methylamino) propane Cas: 64431-96-5 White crystal powder 99% – XD BIOCHEM Detail:
| Catalog Number | XD90106 |
|
Product Name |
1,3-bis(tris(hydroxymethyl)methylamino) propane |
|
CAS |
64431-96-5 |
|
Molecular Formula |
C11H26N2O6 |
|
Molecular Weight |
282.3339 |
|
Storage Details |
Ambient |
|
Harmonized Tariff Code |
29221900 |
Product Specification
| Melting Point | 162°C to 167°C |
| Loss on Drying | 1.0% max |
| Assay | 99.0% minimum |
|
UV Absorbance |
280nm, 0.1 Maq.: 0.15% max / 400nm, 0.1Maq.: 0.05% max |
| PH (1% water solution) | 10.4 to 11.0 |
| Appearance | White crystal powder |
An EOF counter-balanced ITP boundary has been used to stack anions from high conductivity samples during continuous electrokinetic injection of the sample. In a polystyrenesulfonate/poly(diallyldimethylammonium chloride) polyelectrolyte coated capillary, the time at which the ITP boundary exited the capillary could be prolonged by balancing the movement of the boundary with the EOF. Using a bis-tris-propane electrolyte, the ITP boundary was removed from the capillary within 7min, while when using triethanolamine the ITP boundary was still at 30% of the capillary after 2h of injection. Using these systems, the sensitivity of a mixture of simple organic acids in 100mM Cl(-) was improved by 700-800-fold using bis-tris-propane with a whole-capillary injection of the sample and 5min of electrokinetic injection at +28kV, and 1100-1300-fold using triethanolamine and 60min of electrokinetic injection under the same conditions. The potential of the method to be applicable to high conductivity samples was demonstrated by stacking a whole capillary filled with urine spiked with naphthalenedisulfonic acid, with limits of detection 450 times lower than those achievable with a normal hydrodynamic injection
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By Julie from United Kingdom - 2018.11.28 16:25
