Thermo Fisher, 65-0857-78, eBioscience™ Indo-1 AM Calcium Sensor Dye (UltraPure Grade)

eBioscience™ Indo-1 AM Calcium Sensor Dye (UltraPure Grade) Indo-1 AM Calcium Sensor Dye is a membrane-permeable dye used for determining changes in calcium concentrations in the cell using fluorescence microscopy, flow cytometry, fluorescence spectroscopy and fluorescence microplate readers. Once Indo-1 enters the cell, esterases cleave the AM group yielding a membrane-impermeable dye. Unbound Indo-1 has a peak emission at 475 nm. Upon binding calcium, the peak emission shifts down to 410 nm.
In flow cytometry this can be measured over time and can be represented as a ratio of the two emission wavelengths. To optimize the ratio between the two emissions, unbound Indo-1 fluorescence should be collected using a filter above 475nm (525 nm is a good option) while bound Indo-1 fluorescence should be collected using a filter below 400 nm. Because the emission profile of Indo-1 is broad, multicolor flow analysis using eFluor ™ 450, eVolve™ 605 or eVolve™ 655 is not possible, however fluorochrome conjugated antibodies utilizing the 488nm or 633 nm are quite compatible with Indo-1.
Molecular Weight: 1009.
91Peak Excitation: 346 nmPeak Emission: 475 nmIndo-1 AM should be reconstituted in high-quality, freshly opened DMSO. Recommended concentration: 1 mM.
Once reconstituted, it should be protected from light and stored at -20°C; avoid freeze-thaws.
Purity>95% as determined by HPLCReported ApplicationFlow Cytometric Analysis, Microscopy, Immunohistochemical StainingDetection Method: Fluorescence
Quantity: 20 x 50 μg
Color: Blue
Emission: 346/475
For Use With (Application): Immunohistochemistry (IHC), Flow Cytometry
For Use With (Equipment): Fluorescence Microscope
Product Line: eBioscience
Product Type: Dye
Unit Size: Each