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Key Documents

A4108

Sigma-Aldrich

Aminophenyl fluorescein solution

5 mM in DMF, suitable for fluorescence

Synonym(s):

2-[6-(4′-amino)phenoxy-3H-xanthen-3-on-9-yl]benzoic acid solution, APF solution

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About This Item

EC Number:
200-679-5
UNSPSC Code:
12352200
NACRES:
NA.32

form

liquid

Quality Level

200

concentration

5 mM in DMF

suitability

suitable for fluorescence

storage temp.

2-8°C

Related Categories

General description

Aminophenyl fluorescein solution, also known as APF, is a novel fluorescent probe. APF exists as a non-fluorescent entity, which converts to its fluorescent form called fluorescein upon oxidation. The excitation length is at 488nm, and the emission spectrum is monitored between 495-600nm and measured using flow cytometry.

Fluorescence intensity increases after reaction with hROS (e.g. hydroxy radical, peroxynitrite and hypochlorite). And, APF is resistant to light-induced autoxidation.

Application

Aminophenyl fluorescein solution is a suitable tool to detect hypobromous acid (HOBr) produced in eosinophils. It is used to detect the halogenating activity of heme peroxidases in leukocytes. APF does not react with nitric oxide, superoxide, and hydrogen peroxide; hence, it can be used to detect peroxynitrite differentially.
Fluorescent detector of highly reactive oxygen species (hROS). Fluorescence intensity increases after reaction with hROS (e.g. hydroxy radical, peroxynitrite and hypochlorite). Since APF does not react with nitric oxide, superoxide, and hydrogen peroxide, it can be used to differentially detect peroxynitrite. APF is resistant to light-induced autoxidation.

signalword

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Eye Irrit. 2 - Flam. Liq. 3 - Repr. 1B

Storage Class

3 - Flammable liquids

wgk_germany

WGK 2

flash_point_f

135.5 °F - closed cup

flash_point_c

57.5 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Certificates of Analysis (COA)

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Jörg Flemmig et al.
The Journal of biological chemistry, 287(33), 27913-27923 (2012-06-22)
The specific detection of peroxidase activity in human granulocytes is essential to elucidate their role in innate immune responses, immune regulation, and inflammatory diseases. The halogenating activity of myeloperoxidase in neutrophils can be determined by the novel fluorescent probe aminophenyl
J Flemmig et al.
Free radical research, 49(6), 768-776 (2014-12-24)
The formation of hypochlorous and hypobromous acids by heme peroxidases is a key property of certain immune cells. These products are not only involved in defense against pathogenic microorganisms and in regulation of inflammatory processes, but contribute also to tissue

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