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410217

Sigma-Aldrich

2′,7′-Dichlorofluorescein

ACS reagent

Synonym(s):

Dichlorofluorescein; Fluorescein 27

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1 G
€69.20
10 G
€379.00

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1 G
€69.20
10 G
€379.00

About This Item

Empirical Formula (Hill Notation):
C20H10Cl2O5
CAS Number:
Molecular Weight:
401.20
Beilstein:
58009
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47

€69.20


Please contact Customer Service for Availability

Request a Bulk Order

grade

ACS reagent

Quality Level

form

powder

technique(s)

titration: suitable

color

orange to red-brown, powder

mp

280 °C (dec.) (lit.)

solubility

alcohol: passes test

density

0.790 g/cm3

λmax

509 nm

suitability

passes test for adsorption indicator

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Oc1cc2Oc3cc(O)c(Cl)cc3C4(OC(=O)c5ccccc45)c2cc1Cl

InChI

1S/C20H10Cl2O5/c21-13-5-11-17(7-15(13)23)26-18-8-16(24)14(22)6-12(18)20(11)10-4-2-1-3-9(10)19(25)27-20/h1-8,23-24H

InChI key

VFNKZQNIXUFLBC-UHFFFAOYSA-N

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General description

2′,7′-Dichlorofluorescein is an oxidation-sensitive fluorescent probe.

Application

2′,7′-Dichlorofluorescein has been used to measure ROS (reactive oxygen species) formation in cells. It has been used as a fluorogenic substrate to study the peroxidase activity of saliva samples and extracts obtained from submandibular glands.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Aleksey Rukavishnikov et al.
Analytical biochemistry, 419(1), 9-16 (2011-08-27)
Cephalosporin was used to synthesize soluble and precipitating fluorogenic β-lactam substrates that demonstrated differential catalytic hydrolysis by three different subtypes of β-lactamase: TEM-1 (class A), p99 (class C), and a Bacillus cereus enzyme sold by Genzyme (class B). The most
Janaína Kolling et al.
Cardiovascular toxicology, 11(1), 67-73 (2010-11-16)
Hyperhomocysteinemia is a risk factor for cardiovascular disease, stroke, and thrombosis; however, the mechanisms by which homocysteine triggers these dysfunctions are not fully understood. In the present study, we investigated the effect of chronic hyperhomocysteinemia on some parameters of oxidative
Olga N Pakhomova et al.
Archives of biochemistry and biophysics, 527(1), 55-64 (2012-08-23)
Nanosecond pulsed electric field (nsPEF) is a novel modality for permeabilization of membranous structures and intracellular delivery of xenobiotics. We hypothesized that oxidative effects of nsPEF could be a separate primary mechanism responsible for bioeffects. ROS production in cultured cells
M-C Chang et al.
Journal of periodontal research, 48(1), 66-73 (2012-07-28)
Short-chain fatty acids, such as butyric acid and propionic acid, are metabolic by-products generated by periodontal microflora such as Porphyromonas gingivalis, and contribute to the pathogenesis of periodontitis. However, the effects of butyrate on the biological activities of gingival fibroblasts
Gyorgy Hajas et al.
Free radical biology & medicine, 52(4), 749-756 (2011-12-27)
8-Oxo-7,8-dihydroguanine is one the most abundant base lesions in pro- and eukaryotic DNA. In mammalian cells, it is excised by the 8-oxoguanine DNA glycosylase (OGG1) during DNA base-excision repair, and the generated free 8-oxoG base is one of the DNA-derived

Questions

1–4 of 4 Questions  
  1. What is the Department of Transportation shipping information for this product?

    1 answer
    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

      Helpful?

  2. What excitation /emission wavelengths are best for fluorescence detection of 2´,7´-Dichlorofluorescein?

    1 answer
    1. 2´,7´-Dichlorofluorescein can be detected at an excitation wavelength at 504 nm and emission wavelength at 529 nm in 0.1 M Tris pH 8.0.

      Helpful?

  3. In what types of applications can 2´,7´-Dichlorofluorescein be used?

    1 answer
    1. Some applications for use of 2´,7´-Dichlorofluorescein are listed below. This product can be used for the determination of carbohydrates by fluorescence densitometry after TLC.  See G. Gübitz et al., J. Chromatogr., 117, 337, (1976). 2´,7´-Dichlorofluorescein as also been used in the determination of H2O2 by chemiluminescence. See the following references by H. Watanabe et al. Anal. Sci. 2, 461, (1986) and T. Segawa et al. Anal. Sci. 6, 763, (1990). This product has also been used as a  fluorescent additive used in indirect fluorimetric detection in OTC-HPLC. See W.D. Pfeffer and E.S. Yeung, J. Chromatogr., 506, 401, (1990).

      Helpful?

  4. What can be used to make a solution of 2´,7´-dichlorofluorescein?

    1 answer
    1. 2´,7´-Dichlorofluorescein is soluble at 25 mg/mL absolute ethanol with heating. 2´,7´-Dichlorofluorescein is also soluble in water at 0.1 mg/mL.

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