5-(and-6)-carboxy-2',7'-dichlorofluorescein is similar to carboxyfluorescein, but has lower pKa. It is useful for detecting pH in more acidic environment. Also see the membrane-permeant compound dichlorofluorescein diacetate.
- pKa = 4.8
- &lamba;Ex/&lamba;Em = 504/529 nm
- ε= 90,000
- Orange solid soluble in DMSO and pH>6 buffers
- Store at room temperature and protect from light, especially in solution
- C21H10Cl2O7
- MW: 445
- [111843-78-8]
- MSDS: View or download
Storage Temperature:
RT