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5-Carboxy-2′,7′-dichlorosulfonefluorescein

The pKa of 5-carboxy-2′,7′-dichlorosulfonefluorescein is near 4 and thus the dye is potentially an excellent pH indicator for acidic organelles.

Product Attributes

Cell permeability

Membrane impermeant

Probe cellular localization

Fluid phase tracer

pKa

pKa 4.0

Indicator type

Ratiometric

Colors

Green

Excitation/Emission

509/532 nm (pH 9)

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10 mg
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Product Description

The pKa of 5-carboxy-2′,7′-dichlorosulfonefluorescein is near 4 and thus the dye is potentially an excellent pH indicator for acidic organelles.

  • λExEm= 509/532 nm (pH 9)
  • ε = 92,000
  • Yellow solid soluble in DMSO, DMF or a buffer (pH >6)
  • Store at 4°C and protect from light
  • C20H10Cl2O8S
  • MW: 481.26

 

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