CAS:76823-03-5 | 5-Carboxyfluorescein

Name:5-Carboxyfluorescein

Synonyms:5-Carboxyfluorescein;3',6'-dihydroxy-3-oxospiro[2-benzofuran-1,9'-xanthene]-5-carboxylic acid;

CAS:76823-03-5

Purity:≥98%

Molecular Formula:C₂₁H₁₂O₇

Molecular Weight:376.32

Melting Point:368-372ºC

Boiling Point:725.2ºC at 760 mmHg

Flash Point:266.9ºC

Density:1.73 g/cm³

PSA:113.29

LogP:3.36

Appearance:Orange Solid

Solubility:DMF: 1 mg/ml；DMSO: 0.5 mg/ml；Ethanol: 5 mg/ml；Ethanol:PBS(pH 7.2) (1:1): 0.5 mg/ml

Acidity coefficient:3.3, 4.6, 6.4, 7.0(at 25℃)

refractive index:1.816

Storage condition:Keep in dark place,Sealed in dry,2-8°C

Application:5-Carboxyfluorescein（CAS:76823-03-5） is a highly soluble dye which is utilized as a pH indicator. 5-Carboxyfluorescein displays strong fluorescence and is concentration dependent. This compound labels proteins, nucleotides and peptides from carboxylic acid interacting with primary amines.

Reference: 

 1. Weinstein, J.N., et al. 1986. Methods. Enzymol. 128: 657-668. PMID: 3724529

2. David, R., et al. 2003. Biol. Chem. 384: 1619-1630. PMID: 14719805

3. Fischer, R., et al. 2003. Bioconjug. Chem. 14: 653-660. PMID: 12757391

Packaging & Delivery

Package:5g/10g/25g/50g/bulk package

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