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CF-MU [6-Chloro-8-fluoro-umbelliferone] *Fluorescence reference standard*

This compound is used as a calibration standard for CF-MU-based enzyme substrates. It has pH-dependent fluorescence. Compared to umbelliferone, this dye has much lower pKa, making it more fluorescent than umbelliferone under physiological conditions.
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Catalog Number42
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Physical properties
Molecular weight228.6
SolventDMSO
Spectral properties
Excitation (nm)356
Emission (nm)456
Storage, safety and handling
H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure
UNSPSC12171501
Calculators

Common stock solution preparation

Table 1. Volume of DMSO needed to reconstitute specific mass of CF-MU [6-Chloro-8-fluoro-umbelliferone] *Fluorescence reference standard* to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.

0.1 mg0.5 mg1 mg5 mg10 mg
1 mM437.445 µL2.187 mL4.374 mL21.872 mL43.745 mL
5 mM87.489 µL437.445 µL874.891 µL4.374 mL8.749 mL
10 mM43.745 µL218.723 µL437.445 µL2.187 mL4.374 mL

Molarity calculator

Enter any two values (mass, volume, concentration) to calculate the third.

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Spectrum
References
View all 10 references: Citation Explorer
A Novel Fluorogenic Coumarin Substrate for Monitoring Acid Phosphatase Activity at Low pH Environment
Authors: Yang D, Z Li, Y Diwu, H Fu, J Liao, C Wei, and Z Diwu, undefined
Journal: Curr Chem Genomics (2008): 48–50
Novel thiocoumarins as inhibitors of TNF-alpha induced ICAM-1 expression on human umbilical vein endothelial cells (HUVECs) and microsomal lipid peroxidation
Authors: Kumar S, Singh BK, Kalra N, Kumar V, Kumar A, Prasad AK, Raj HG, Parmar VS, Ghosh B.
Journal: Bioorg Med Chem (2005): 1605
Excited state properties of 7-hydroxy-4-methylcoumarin in the gas phase and in solution. A theoretical study
Authors: Georgieva I, Trendafilova N, Aquino A, Lischka H.
Journal: J Phys Chem A Mol Spectrosc Kinet Environ Gen Theory (2005): 11860
Measurement of enzyme kinetics using microscale steady-state kinetic analysis
Authors: Gleason NJ, Carbeck JD.
Journal: Langmuir (2004): 6374
Stability of the complexes of some lanthanides with coumarin derivatives. I. Cerium(III)-4-methyl-7-hydroxycoumarin
Authors: Kostova IP, Manolov, II, Radulova MK.
Journal: Acta Pharm (2004): 37