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408511-50-2

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408511-50-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 408511-50-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,8,5,1 and 1 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 408511-50:
(8*4)+(7*0)+(6*8)+(5*5)+(4*1)+(3*1)+(2*5)+(1*0)=122
122 % 10 = 2
So 408511-50-2 is a valid CAS Registry Number.

408511-50-2Relevant articles and documents

Rates and Equilibria of Keto-Enol and -Enolate Ion Interconversion in the 2,4,6-Trimethylacetophenone System. Reinvestigation of the Unusual Bromination Reaction

Kresge, A. J.,Schepp, N. P.

, p. 1548 - 1549 (2007/10/02)

The bromination of 2,4,6-trimethylacetophenone, whose unusual kinetics were once thought to be the result of slow, sterically hindered addition of bromine to the enol, was found to be a ring- rather than a side-chain-substitution reaction; kinetic and thermodynamic charactristics of this keto-enol system were determined by a combination of flash-photolytic and conventional kinetic techniques and were found to be little different from those of the parent (unsubstituted) acetophenone keto-enol system.

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