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111171-84-7

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111171-84-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 111171-84-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,1,7 and 1 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 111171-84:
(8*1)+(7*1)+(6*1)+(5*1)+(4*7)+(3*1)+(2*8)+(1*4)=77
77 % 10 = 7
So 111171-84-7 is a valid CAS Registry Number.

111171-84-7Relevant articles and documents

AROMATIC ANNULATION WITH BISPHENYLTHIONIUM IONS

Manas, Abdul Rahman Bin,Smith, Robin A. J.

, p. 1847 - 1856 (1987)

The chemospecific production and intramolecular aromatic electrophilic substitution (annulation) of bis(phenylthio)carbocations (bisphenylthionium ions) has been studied using appropriate model compounds.The annulation reaction is very sensitive to the Lewis acid initiator and also the solvent.The best reaction conditions were found to be a suspension of silver trifluoromethanesulfonate in dichloromethane.Annulation of six-membered rings onto alkylbenzene and five- and seven-membered rings onto activated benzenes have been achieved.

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