Skip to Content
Merck
All Photos(1)

Key Documents

57180

Sigma-Aldrich

Indo 1

for fluorescence, ≥80.0% (HPLC)

Synonym(s):

4-(6-Carboxy-2-indolyl)-4′-methyl-2,2′-(ethylenedioxy)dianiline-N,N,N′,N′-tetraacetic acid pentapotassium salt

Sign Into View Organizational & Contract Pricing


About This Item

Empirical Formula (Hill Notation):
C32H26K5N3O12
CAS Number:
Molecular Weight:
840.05
MDL number:
UNSPSC Code:
12352200
PubChem Substance ID:
NACRES:
NA.32

grade

for fluorescence

Assay

≥80.0% (HPLC)

form

solid

fluorescence

λex 331 nm; λem 398 nm in 0.1 M Tris pH 8.0, 10 mM Ca2+
λex 349 nm; λem 482 nm (100mM KCI)

suitability

in accordance for fluorescence

storage temp.

−20°C

SMILES string

[K+].[K+].[K+].[K+].[K+].Cc1ccc(N(CC([O-])=O)CC([O-])=O)c(OCCOc2cc(ccc2N(CC([O-])=O)CC([O-])=O)-c3cc4ccc(cc4[nH]3)C([O-])=O)c1

InChI

1S/C32H31N3O12.5K/c1-18-2-6-24(34(14-28(36)37)15-29(38)39)26(10-18)46-8-9-47-27-13-20(5-7-25(27)35(16-30(40)41)17-31(42)43)22-11-19-3-4-21(32(44)45)12-23(19)33-22;;;;;/h2-7,10-13,33H,8-9,14-17H2,1H3,(H,36,37)(H,38,39)(H,40,41)(H,42,43)(H,44,45);;;;;/q;5*+1/p-5

InChI key

VGZPRMSXVNDMAN-UHFFFAOYSA-I

Application

Indo 1, a fluorescent calcium chelator and indicator, is used to monitor cytoplasmic Ca2+ transients induced by various physiological and mechanical processes.

Other Notes

Fluorescent calcium chelator and indicator with an unusually large shift in fluorescence emission from 480 nm to 400 nm on binding of calcium. Useful for intracellular application

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Sandrine Pouvreau et al.
The Journal of physiology, 567(Pt 3), 815-828 (2005-07-05)
Nitric oxide (NO) generated by skeletal muscle is believed to regulate force production but how this is achieved remains poorly understood. In the present work we tested the effects of NO synthase (NOs) inhibitors on membrane current and intracellular calcium
K G Lazzari et al.
The Journal of biological chemistry, 261(21), 9710-9713 (1986-07-25)
The activation of human neutrophils by chemotactic peptides evokes a rapid change in membrane potential and an increase in cytoplasmic Ca2+ levels. These events are followed up to a minute later by detectable levels of microbicidal agents formed by the
M K Bijsterbosch et al.
Biochemical and biophysical research communications, 137(1), 500-506 (1986-05-29)
The new Ca2+-probe indo-1 has a high fluorescence intensity, which allows low intracellular dye loadings. Stimulation of indo-1-loaded mouse B cells with anti-Ig antibodies provoked rapid rise of free cytoplasmic Ca2+ from 100 nM to greater than 1 microM, followed
Microsphere-based real-time calcium sensing.
Rosario M Sánchez-Martín et al.
Angewandte Chemie (International ed. in English), 45(33), 5472-5474 (2006-07-19)
Michael Bannwarth et al.
ACS chemical biology, 4(3), 179-190 (2009-02-06)
The role of calcium in signal transduction relies on the precise spatial and temporal control of its concentration. The existing means to detect fluctuations in Ca2+ concentrations with adequate temporal and spatial resolution are limited. We introduce here a method

Articles

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

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

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

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

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service