Cas 109971-01-9,C32H28O2

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Check Digit Verification of cas no

The CAS Registry Mumber 109971-01-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,9,7 and 1 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 109971-01:
(8*1)+(7*0)+(6*9)+(5*9)+(4*7)+(3*1)+(2*0)+(1*1)=139
139 % 10 = 9
So 109971-01-9 is a valid CAS Registry Number.

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109971-01-9Relevant academic research and scientific papers

REACTION OF SELENONIUM KETO YLIDE WITH DIBENZYLIDENE DERIVATIVES OF KETONES

Magdesieva, N. N.,Sergeeva, T. A.,Averina, N. V.

, p. 1894 - 1899 (2007/10/02)

The reaction of selenium monoketo ylides with the dibenzylidene derivatives of ketones (acetone, cyclopentanone, cyclohexanone) only takes place at one double bond of the dienone by a mechanism of the -cycloaddition type with the formation of two iso

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