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Calcium ionophore II

Selectophore™, function tested

Synonym(s):

N,N,N′,N′-Tetra[cyclohexyl]diglycolic acid diamide, N,N,N′,N′-Tetracyclohexyl-3-oxapentanediamide, ETH 129

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About This Item

Empirical Formula (Hill Notation):
C28H48N2O3
CAS Number:
74267-27-9
Molecular Weight:
460.69
Beilstein/REAXYS Number:
6491651
MDL number:
MFCD00043337
UNSPSC Code:
26111700
PubChem Substance ID:
329752116
NACRES:
NB.61

grade

for ion-selective electrodes

Quality Level

200

product line

Selectophore™

form

solid

quality

function tested

SMILES string

O=C(COCC(=O)N(C1CCCCC1)C2CCCCC2)N(C3CCCCC3)C4CCCCC4

InChI

1S/C28H48N2O3/c31-27(29(23-13-5-1-6-14-23)24-15-7-2-8-16-24)21-33-22-28(32)30(25-17-9-3-10-18-25)26-19-11-4-12-20-26/h23-26H,1-22H2

InChI key

URAUKAJXWWFQSU-UHFFFAOYSA-N

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General description

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Application

Selected application examples
Calcium ionophore II (ETH 129) was used in preparing calcium selective minielectrodes which are used in determination of dissociation constant (Kd).
Suitable for intracellular calcium measurements.
Lipophilic ionophore for Ca2+-selective electrodes with detection limit in the sub-nanomolar range. Extremely efficient carrier of Ca2+-ions; induces a selectivity in membranes for Ca2+ over Mg2+ by a factor of about 104.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Legal Information

Selectophore is a trademark of Merck KGaA, Darmstadt, Germany

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
60824/2
AR060824/2
AR60824/2
060824/2V
060824/2

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G Prestipino et al.
Analytical biochemistry, 210(1), 119-122 (1993-04-01)
We have investigated the ability of the neutral ionophore ETH 129 to translocate Ca2+ across artificial and biological membranes. ETH 129 induces Ca2+ transport across planar lipid bilayer. The zero-current membrane potential in a gradient of Ca2+ concentration exhibits Nernst
Iwona Bedlechowicz-Sliwakowska et al.
Analytical and bioanalytical chemistry, 385(8), 1477-1482 (2006-07-19)
In this work, ion-selective electrodes for calcium ion were investigated. Two ionophores were used in the membranes: ETH 1001 and ETH 129. An internal filling solution buffered for primary ion was used that allowed the lower detection limit to be
N Abramova et al.
Talanta, 113, 31-35 (2013-05-28)
An analytical system based on ion-selective field effect transistors (ISFETs) with Ca(2+) ion selective photocurable membranes is developed to offer a semiautomatic analysis of serum calcium concentration of ruminants. Optimisation of ion-sensitive membrane composition containing different copolymerised plasticizers was performed
Yi Yuan et al.
Analytical chemistry, 76(18), 5570-5578 (2004-09-15)
Chronoamperometry was carried out at liquid/liquid interfaces supported at the tip of micropipet electrodes for direct determination of the diffusion coefficient of a species in the outer solution. The diffusion coefficient was used for subsequent determination of the transferred charges
Mariya V Kovaleva et al.
Journal of bioenergetics and biomembranes, 41(3), 239-249 (2009-07-18)
In this study we used tightly-coupled mitochondria from Yarrowia lipolytica and Dipodascus (Endomyces) magnusii yeasts, possessing a respiratory chain with the usual three points of energy conservation. High-amplitude swelling and collapse of the membrane potential were used as parameters for
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