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77942-14-4

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77942-14-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77942-14-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,4 and 2 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 77942-14:
(7*7)+(6*7)+(5*9)+(4*4)+(3*2)+(2*1)+(1*4)=164
164 % 10 = 4
So 77942-14-4 is a valid CAS Registry Number.

77942-14-4Relevant articles and documents

The Synthesis of Indan-1-ones and Isocoumarins

Carter, Rachel H.,Garson, Mary J.,Hill, Robert A.,Staunton, James,Sunter, David C.

, p. 471 - 479 (2007/10/02)

A flexible synthetic route leading via indan-1-ones to variously methylated and oxygenated isocoumarins is described.The indanones are prepared by alternative routes involving intramolecular Friedel-Crafts cyclisation of arylpropionic acids or pericyclic ring closure of acrylophenones.The influence of substitution on the rate of the pericyclic reaction is assessed.

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