1,2-Bis(2-aminophenoxy)ethane-N,N,N′,N′-tetraacetic acid tetrasodium salt

SIGMA/14513 - ≥95% (HPLC)

Synonym: 1,2-Bis (2-aminophenoxy) ethane-N,N,N′,N′-tetraacetic acid tetrasodium salt; BAPTA-Na₄; Tetrasodium 1,2-bis(2-aminophenoxy)ethane-N,N,N′,N′-tetraacetate

CAS Number: 126824-24-6
Empirical Formula (Hill Notation): C₂₂H₂₀N₂Na₄O₁₀
Molecular Weight: 564.36
MDL Number: MFCD00067691
Linear Formula: C₂₂H₂₀N₂Na₄O₁₀
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-14513-250MG	250 mg	$75.00 1/EAAdd To Favorites	Add To Favorites
45-14513-1G	1 g	$190.00 1/EAAdd To Favorites	Add To Favorites

assay	≥95% (HPLC)
fluorescence	λ_ex 254 nm; λ_em 363 nm in H₂O
	λ_ex 274 nm; λ_em 363 nm (with calcium)
form	powder
impurities	≤12.5% water
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
InChI key	ZWSMLJACYSGFKD-UHFFFAOYSA-J
Quality Level	200
SMILES string	[Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)c1ccccc1OCCOc2ccccc2N(CC([O-])=O)CC([O-])=O
solubility	H₂O: 10 mg/mL, clear, faintly yellow
storage temp.	−20°C

Application:	BAPTA-Na₄ is a fluorescent compound utilized to determine free Ca2+ by performing fluorescence emission scans at an excitation wavelength of 299 nm and measuring the emission wavelength at 360 nm .
Application:	suitable as Ca²⁺-indicator (fluorescence suppressed by Ca²⁺)
Other Notes:	Chelator with a greater selectivity for calcium compared with magnesium (spectrophotometric monitoring):

RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

Purity	≥95% (HPLC)
Storage Temp.	−20°C
UNSPSC	12352106