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Merck
CN

47989

Fura 2-AM

BioReagent, suitable for fluorescence, ≥95.0% (HPLC)

Synonym(s):

Fura-2 pentakis(acetoxymethyl) ester

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About This Item

Empirical Formula (Hill Notation):
C44H47N3O24
CAS Number:
108964-32-5
Molecular Weight:
1001.85
UNSPSC Code:
12171500
NACRES:
NA.32
PubChem Substance ID:
57651141
MDL number:
MFCD00036976
Beilstein/REAXYS Number:
8183748

Key Documents

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Product Name

Fura 2-AM, BioReagent, suitable for fluorescence, ≥95.0% (HPLC)

InChI

1S/C44H47N3O24/c1-25-7-8-32(46(16-39(53)65-20-60-26(2)48)17-40(54)66-21-61-27(3)49)35(11-25)58-9-10-59-36-12-31-13-37(43-45-15-38(71-43)44(57)69-24-64-30(6)52)70-34(31)14-33(36)47(18-41(55)67-22-62-28(4)50)19-42(56)68-23-63-29(5)51/h7-8,11-15H,9-10,16-24H2,1-6H3

SMILES string

CC(=O)OCOC(=O)CN(CC(=O)OCOC(C)=O)c1ccc(C)cc1OCCOc2cc3cc(oc3cc2N(CC(=O)OCOC(C)=O)CC(=O)OCOC(C)=O)-c4ncc(o4)C(=O)OCOC(C)=O

InChI key

VPSRLGDRGCKUTK-UHFFFAOYSA-N

product line

BioReagent

assay

≥95.0% (HPLC)

form

solid

solubility

DMSO: soluble

fluorescence

λex 355 nm; λem 495 nm in 0.1 M Tris pH 8.0, esterase; 10 mM Ca2+

suitability

suitable for fluorescence

storage temp.

−20°C

Quality Level

100

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Application

Fura 2-AM is a popular probe used to determine dynamic changes in cytosolic free calcium in intact living cells.

Features and Benefits

The major benefits of using the ester form of Fura 2 as Fura 2-AM are:

  • It is cell-permeable.
  • It can be loaded into cells easily.
Other advantages of using Fura 2-AM over single wavelength dyes is that the ratio signal is independent of :
  • The dye concentration.
  • Illumination intensity, and
  • Optical path length.

General description

Fura 2-AM (Fura 2), also known as acetoxy-methyl-ester, is a calcium-specific ratio-metric fluorescent dye. In response to calcium ions, ratio metric dyes like Fura 2 changes their respective excitation or emission spectra. The intracellular calcium concentration is determined by the fluorescence emission ratio or excitation at distinct wavelengths. Fura 2 has an emission peak at 505nm, and the excitation peak ranges between 340-380nm and is the preferred calcium indicator.

Other Notes

Membrane-permeable derivative of Fura-2. Used to load the chelator into cells. Hydrolysed enzymatically in the cell to yield Fura-2 which remains within the cell

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
BCCL8456
BCCJ0580
BCCF8185
BCCC0317
BCBV9098

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Robin R Hodges et al.
Experimental eye research, 103, 99-113 (2012-09-15)
The purpose of this study was to identify the signaling pathways that epidermal growth factor (EGF) uses to stimulate mucin secretion from cultured rat conjunctival goblet cells and to compare the pathways used by EGF with those used by the
M Poenie et al.
Nature, 315(6015), 147-149 (1985-05-09)
Although the regulation of events in the cell division cycle by calcium or other cations has been the subject of much interest and speculation, experimental studies have been hampered by the difficulty of measuring submicromolar intracellular free calcium concentrations ([Ca2+]i)
Rubin Gulaboski et al.
Cell calcium, 43(6), 615-621 (2007-11-16)
Fura-2 is one of the most commonly used fluorescent dyes to analyze the cytosolic Ca(2+) concentration ([Ca(2+)](i)) of living cells. Fura-2-dependent measurements of [Ca(2+)](i) are susceptible to changes of pH, reactive oxygen species concentration and membrane potential. Fura-2 is often
W Almers et al.
FEBS letters, 192(1), 13-18 (1985-11-11)
The Ca concentration ([Ca2+]i) in single rat peritoneal mast cells was measured by means of the new fluorescent Ca-indicator dye fura-2. Dye-loaded cells were made to degranulate with either antigen or compound 48/80. In cells loaded with extracellularly applied, membrane-permeant
The use of microinjection and video microscopy for the study of calmodulin and calcium in living cells.
M Shelanski et al.
Methods in enzymology, 139, 824-834 (1987-01-01)
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Nitric oxide (NO) as a signal transporter in neurons, endothelial cells and in the immune system.

Fluorescence Lifetime Measurement

Fluorescence lifetime measurement is advantageous over intensity-based measurements. Applications include fluorescence lifetime assays, sensing and FLI.

荧光寿命测量

荧光寿命测量与基于强度的测量相比是有优势的。其应用包括荧光寿命分析，感测和FLI。

感应染料

一氧化氮 (NO) 是神经元、内皮细胞和免疫系统中的信号转运分子。

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