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129518-51-0

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  • 31H-4,21-(Methano[1,3]benzenomethano)-26,30-metheno-25H-dibenzo[q,z][1,4,7,10,13,16]hexaoxacycloheptacosin-32,35-diol,2,23,28,38-tetrakis(1,1-dimethylethyl)-6,7,9,10,12,13,15,16,18,19-decahydro-

    Cas No: 129518-51-0

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  • 31H-4,21-(Methano[1,3]benzenomethano)-26,30-metheno-25H-dibenzo[q,z][1,4,7,10,13,16]hexaoxacycloheptacosin-32,35-diol,2,23,28,38-tetrakis(1,1-dimethylethyl)-6,7,9,10,12,13,15,16,18,19-decahydro-

    Cas No: 129518-51-0

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129518-51-0 Usage

Chemical Properties

white to almost white fine crystalline powder

Check Digit Verification of cas no

The CAS Registry Mumber 129518-51-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,5,1 and 8 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 129518-51:
(8*1)+(7*2)+(6*9)+(5*5)+(4*1)+(3*8)+(2*5)+(1*1)=140
140 % 10 = 0
So 129518-51-0 is a valid CAS Registry Number.

129518-51-0SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name 4-TERT-BUTYL-CALIX[4]ARENE-CROWN-6-COMPLEX

1.2 Other means of identification

Product number -
Other names 4-TERT-BUTYLCALIX(4)-CROWN-6

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:129518-51-0 SDS

129518-51-0Downstream Products

129518-51-0Relevant articles and documents

Chelation of heavy group 2 (radio)metals by p-tert-butylcalix[4]arene-1,3-crown-6 and logK determination via NMR

Bauer, David,Gott, Matthew,Steinbach, J?rg,Mamat, Constantin

, p. 50 - 56 (2018)

A crown-bridged calix[4]arene scaffold was investigated as lead compound for the ligation of heavy alkaline earth metals such as strontium and barium, which appear to be useful for radiopharmaceutical applications in diagnosis as well as in radiotherapy. In particular barium, due to its chemical similarities, could serve as a surrogate for radium, a metal of high radiopharmaceutical interest. The ability of p-tert-butylcalix[4]arene-1,3-crown-6 (1) in particular to chelate cations, such as group 1 and 2 metal ions or ammonium ions is well known. Also, the manifold possibilities of structural modification on the upper- and lower-rim as well as on the crown itself produce properties that may lead to a highly selective and effective chelating agent. In this work, titration experiments of the perchlorate salts of Ba2+, Sr2+ and Pb2+ with ligand 1 were performed to determine their stability constants (logK = 4.7, 4.3, and 3.3, respectively) by 1H NMR measurements in acetonitrile-d3.

Synthesis of Ionizable Calix[4]arenes for Chelation of Selected Divalent Cations

Al-Ameed, Karrar,Blumberg, Markus,Eiselt, Erik,Luber, Sandra,Mamat, Constantin

, (2022/03/01)

Two sets of functionalised calix[4]arenes, either with a 1,3-crown ether bridge or with an open-chain oligo ether moiety in 1,3-position were prepared and further equipped with additional deprotonisable sulfonamide groups to establish chelating systems for selected cations Sr2+, Ba2+, and Pb2+ ions. To improve the complexation behaviour towards these cations, calix[4]arenes with oligo ether groups and modified crowns of different sizes were synthesized. Association constants were determined by UV/Vis titration in acetonitrile using the respective perchlorate salts and logK values between 3.2 and 8.0 were obtained. These findings were supported by the calculation of the binding energies exemplarily for selected complexes with Ba2+.

Proton di-ionizable p-tert-butylcalix[4]arene-crown-6 compounds in cone, partial-cone and 1,3-alternate conformations: Synthesis and alkaline earth metal cation extraction

Zhou, Hui,Surowiec, Kazimierz,Purkiss, David W.,Bartsch, Richard A.

, p. 1676 - 1684 (2007/10/03)

Novel proton di-ionizable p-tert-butylcalix[4]arene-crown-6 compounds in cone, partial-cone and 1,3-alternate conformations are synthesized to compare the efficiency and selectivity with which they extract alkaline earth metal ions. In these ligands, a cr

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