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N,N'-(1,3-phenylenebis(but-3-yne-1,1-diyl))bis(4-methylbenzenesulfonamide) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1619919-70-8

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1619919-70-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1619919-70-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,9,9,1 and 9 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1619919-70:
(9*1)+(8*6)+(7*1)+(6*9)+(5*9)+(4*1)+(3*9)+(2*7)+(1*0)=208
208 % 10 = 8
So 1619919-70-8 is a valid CAS Registry Number.

1619919-70-8Relevant articles and documents

Arylpyrrole oligomers as tunable anion receptors

Van Rossom, Wim,Terentyeva, Tatyana G.,Sodeyama, Keitaro,Matsushita, Yoshitaka,Tateyama, Yoshitaka,Ariga, Katsuhiko,Hill, Jonathan P.

supporting information, p. 5492 - 5499 (2014/07/21)

A novel type of arylpyrrole oligomer possessing an appropriate electropositive cavity has been designed, prepared and analysed for use as readily accessible receptors for negatively charged guests. Affinities of the receptors for various anions were determined by UV/Vis titration experiments and in depth insights into the host-guest interactions were gained by performing 1H NMR titration experiments and X-ray crystallographic structure analyses. Experimentally determined association constants were correlated with the calculated maximum electrostatic potentials of the electropositive cavities of the receptors, allowing estimation of the strengths of host-guest associations in similar compounds. The joint contribution of aryl C-H and pyrrole N-H hydrogens was shown to be key to a strong guest association, resulting in the arylpyrrole oligomers being efficient anion receptors. This journal is the Partner Organisations 2014.

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