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77941-98-1

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77941-98-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77941-98-1 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 1 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 77941-98:
(7*7)+(6*7)+(5*9)+(4*4)+(3*1)+(2*9)+(1*8)=181
181 % 10 = 1
So 77941-98-1 is a valid CAS Registry Number.

77941-98-1Downstream Products

77941-98-1Relevant 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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