5-(and-6)-carboxy-2',7'-dichlorofluorescein is similar to carboxyfluorescein (
51013)but has lower pK
a, It is useful for detecting pH in more acidic environment.
- pKa = 4.8.
- lex\lem = 504nm\529nm.
- e= 90,000.
- Orange solid soluble in DMSO and pH>6 buffers.
- Store at 4?C. Protect from light, especially in solution.
- C21H10Cl2O7.
- Mwt: 445.
- [111843-78-8]