196418

BAPTA, Tetrasodium Salt

Ca2+ chelator exhibiting a 105-fold greater affinity for Ca2+ .

• Sinónimos: BAPTA, Tetrasodium Salt, 1,2- bis( o-Aminophenoxy)ethane-N,N,Nʹ,Nʹ-tetraacetic Acid, 4Na, 1,2-bis(o-Aminophenoxy)ethane-N,N,Nʹ,Nʹ-tetraacetic Acid, 4Na
• Fórmula empírica (notación de Hill): C₂₂H₂₀N₂O₁₀ · 4Na
• Número de CAS: 126824-24-6
• Peso molecular: 564.36
• Número MDL: MFCD00067691
• Código UNSPSC: 12352106
• NACRES: NA.25

Propiedades

• Nivel de calidad: 100
• Formulario: solid
• idoneidad de la reacción: reagent type: chelator
• fabricante / nombre comercial: Calbiochem^®
• condiciones de almacenamiento: OK to freeze; desiccated (hygroscopic); protect from light
• color: off-white
• solubilidad: water: 10 mg/mL
• Condiciones de envío: ambient
• temp. de almacenamiento: −20°C
• cadena SMILES: [Na+].[Na+].[Na+].[Na+].N(CC(=O)[O-])(CC(=O)[O-])c1c(cccc1)OCCOc2c(cccc2)N(CC(=O)[O-])CC(=O)[O-]
• InChI: 1S/C22H24N2O10.4Na/c25-19(26)11-23(12-20(27)28)15-5-1-3-7-17(15)33-9-10-34-18-8-4-2-6-16(18)24(13-21(29)30)14-22(31)32;;;;/h1-8H,9-14H2,(H,25,26)(H,27,28)(H,29,30)(H,31,32);;;;/q;4*+1/p-4
• Clave InChI: ZWSMLJACYSGFKD-UHFFFAOYSA-J

Descripción

Descripción general

Ca²⁺-chelator exhibiting a 10⁵-fold greater affinity for Ca²⁺ (110 nM) than for Mg²⁺. After BAPTA complexes with Ca²⁺, the UV spectrum shifts from 254 to 279 nm at pH >6.0. Useful for spectrophotometric monitoring of extracellular Ca²⁺ levels, especially transient phenomena, because of its insensitivity to pH. Has been used for the measurement and control of Ca²⁺ levels in eggs, chromaffin cells, muscle cells, retinal cells, and pancreatic cells. In conjunction with certain formazan dyes, BAPTA can be used in a colorimetric assay for Mg²⁺. Has neuroprotective effects in vitro against excitotoxic damage and spontaneous recurrent seizures, such as epilepsy.

Advertencia

Toxicity: Irritant (B)

Reconstitución

Following reconstitution, aliquot, purge with inert gas and freeze (-20°C). To increase stability in solution, store at a high pH (>10). Stock solutions are stable for up to 1 month at -20°C.

Otras notas

DeLorenzo, R.J., et al. 1998. Proc. Natl. Acad. Sci. USA 95, 14482.
Li, L., et al. 1995. J. Cell Physiol. 163, 105.
Tymianski, M., et al. 1994. J. Neurophysiol. 72, 1973.

Información legal

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Información de seguridad

• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 3
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable