EGTA tetrasodium salt *CAS 13368-13-3*
Catalogue Number: 21007-AAT
| Manufacturer: | AAT Bioquest |
| Shelf Life: | 12 months |
| Type: | Probes |
| Shipping Condition: | RT |
| Unit(s): | 1 g |
Description
Description: EGTA (1,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid) is a water-soluble and cell-impermeable calcium chelator. It has high selectivity to calcium. Compared to EDTA, EGTA has a lower affinity for magnesium, making it more selective for calcium ions. It is useful in buffer solutions that resemble the environment in living cells where calcium ions are usually at least a thousand fold less concentrated than magnesium. The pKa for binding of calcium ions by tetrabasic EGTA is 11.00, but the protonated forms do not significantly contribute to binding, so at pH 7, the apparent pKa becomes 6.91.
Additional Text
Storage Note
Freeze (< -15 °C); Minimize light exposure;|12 months
21007 Datasheet
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