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
Empirical Formula (Hill Notation): C22H20N2Na4O10
Molecular Weight: 564.36
CAS Number: 126824-24-6
assay
| 95% (HPLC) |
impurities | 12.5% water |
solubility | H2O: soluble10 mg/mL, clear, faintly yellow |
fluorescence | ex 254 nm; em 363 nm in H2O |
| ex 274 nm; em 363 nm (with calcium) |
storage temp. | 20C |
suitable as Ca2+-indicator (fluorescence suppressed by Ca2+)
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