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1257792-97-4

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1257792-97-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1257792-97-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,7,9 and 2 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1257792-97:
(9*1)+(8*2)+(7*5)+(6*7)+(5*7)+(4*9)+(3*2)+(2*9)+(1*7)=204
204 % 10 = 4
So 1257792-97-4 is a valid CAS Registry Number.

1257792-97-4Relevant articles and documents

Electrophilic ipso-iodination of silylated arylboronic acids

Durka,Górka,Kurach,Luliński,Serwatowski

, p. 2635 - 2643 (2010/11/21)

Silylated functionalized arylboronic acids were converted into corresponding iodinated arylboronic acids in good yields via the electrophilic ipso-desilylation effected with iodine chloride in refluxing CHCl3. Disilylated arylboronic acids were susceptible to diiodination. In addition, the structural characterization and reactivity of a novel sterically hindered ortho-silylated diarylborinic ester were reported. The potential of selected iodinated phenylboronic acids as monomers for the Suzuki-Miyaura cross-coupling polymerization was demonstrated.

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