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34164-52-8

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34164-52-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 34164-52-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,1,6 and 4 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 34164-52:
(7*3)+(6*4)+(5*1)+(4*6)+(3*4)+(2*5)+(1*2)=98
98 % 10 = 8
So 34164-52-8 is a valid CAS Registry Number.

34164-52-8Downstream Products

34164-52-8Relevant articles and documents

gem-Dimethyl Effect in a Grignard Reagent Cyclization-Cleavage Rearrengament

Hill, Alexander E.,Link, Daniel C.,Donndelinger Peter

, p. 1177 - 1182 (2007/10/02)

(2,2-Dimethyl-4-penten-1-yl)magnesium bromide (1) is in equilibrium with its cyclic isomer, magnesium bromide (2).The equilibrium constant for this cyclization has a value of 2E-3.The gem-dimethyl substitution leads to an increase of a factor of about 22 in the equilibrium constant and also retards the rate of cleavage of 2.The sources of the gem-dimethyl effect in this system are discussed.

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