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A5894

Sigma-Aldrich

Antipyrylazo III

~95%

Synonym(s):

3,6-Bis(4-antipyrylazo)-4,5-dihydroxy-2,7-naphthalenedisulfonic acid disodium salt

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About This Item

Empirical Formula (Hill Notation):
C32H26N8Na2O10S2
CAS Number:
14918-39-9
Molecular Weight:
792.71
Beilstein:
956469
EC Number:
238-988-2
MDL number:
MFCD00042700
UNSPSC Code:
12171500
PubChem Substance ID:
24891032

Assay

~95%

technique(s)

titration: suitable

suitability

suitable for determination of calcium (method in Anal. Chim. Acta, 71, 343 (1974))

SMILES string

[Na+].[Na+].CN1N(c2ccccc2)C(=O)C(\N=N\c3c(O)c4c(O)c(\N=N\C5=C(C)N(C)N(c6ccccc6)C5=O)c(cc4cc3S([O-])(=O)=O)S([O-])(=O)=O)=C1C

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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)

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Cation complexation by antipyrylazo III: chelate spectral behavior correlated with divalent cation properties.
S E Pattison et al.
Analytical biochemistry, 247(1), 181-183 (1997-04-05)
J Maylie et al.
The Journal of physiology, 442, 551-567 (1991-10-01)
1. The effects of 2,3-butanedione monoxime (BDM) on the optical retardation and myoplasmic Ca2+ signal were studied in twitch fibres of Rana temporaria. The myoplasmic Ca2+ transient in response to action potential stimulation was monitored in cut fibres containing Antipyrylazo
A Barth et al.
Biochimica et biophysica acta, 1057(1), 115-123 (1991-03-01)
Fourier transform infrared spectroscopy was used to investigate ligand binding and conformational changes in the Ca2(+)-ATPase of sarcoplasmic reticulum during the catalytic cycle. The ATPase reaction was started in the infrared sample by release of ATP from the inactive, photolabile
A V Tepikin et al.
The Journal of membrane biology, 123(1), 43-47 (1991-07-01)
Simultaneous optical measurements of extra- and intracellular Ca2+ concentrations were carried out on isolated snail neurons injected iontophoretically with Ca2+. The fluorescent indicator Fura-2 was used to measure intracellular concentration of free Ca, and the absorbant indicator Antipyrylazo III to
H Sun et al.
Biochimica et biophysica acta, 1403(1), 57-71 (1998-06-12)
The accurate measurement of the intracellular concentration of free magnesium ions ([Mg2+]i) is essential for evaluating the role of Mg2+ in cellular functions. Among the specific (compared to fluorescent indicators) metallochromic dyes, antipyrylazo III (APIII) appears to be most suitable
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