Certificate of Analysis

 

Product Name: 2',7'-dichlorodihydrofluorescein
Catalog Number: M59028
CAS Number: 106070-31-9

Physical and Chemical Properties
Formula: C20H12Cl2O5
Molecular Weight: 403.21
Form: Solid
Solubility: DMSO ≥ 100 mg/mL
Storage: Powder          -20°C   3 years ;  4°C   2 years
In solvent       -80°C   6 months ;  -20°C   1 month
Chemical Structure: 2',7'-dichlorodihydrofluorescein Structure
Analytical Data
QC Standard: ≥99.0%
H-NMR: Consistent with structure
Product Information
Description: 2,7-Dichlorodihydrofluorescein (DCFH2) is a non-fluorescent reactive oxygen species (ROS) probe with an excitation wavelength of 485-500 nm and an emission wavelength of 515-530 nm. 2,7-Dichlorodihydrofluorescein is first hydrolyzed by intracellular esterases and then oxidized by ROS to generate non-biomembrane-permeable, highly fluorescent 2,7-dichlorofluorescein (DCF). 2,7-Dichlorodihydrofluorescein can undergo oxidation reactions with a variety of ROS (such as ·OH, H2O2, ONOO-, etc.) and is used to quantitatively detect the level of oxidative stress inside and outside cells. The fluorescence intensity of DCF is positively correlated with the ROS concentration.
   
Stability and Solubility Advice: Information concerning product stability, particularly in solution, has rarely been reported and in most cases we can only offer a general guide.
We recommend that stock solutions, once prepared, are stored aliquoted in tightly sealed vials and used within 1 month. Avoid repeated freeze and thaw cycles. Storage conditions for some special products should refer to their storage details.