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34237-40-6

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34237-40-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 34237-40-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,2,3 and 7 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 34237-40:
(7*3)+(6*4)+(5*2)+(4*3)+(3*7)+(2*4)+(1*0)=96
96 % 10 = 6
So 34237-40-6 is a valid CAS Registry Number.

34237-40-6Relevant articles and documents

AlCl3-NaI(NaBr)-t-BuOH: mild, chemo- and stereoselective reagents for hydrohalogenation of propiolic derivatives

Feray, Laurence,Perfetti, Patricia,Bertrand, Michèle

experimental part, p. 8733 - 8737 (2009/12/28)

(Z)-β-Iodo-propenamides and -β-iodo-propenoic esters were selectively prepared in high yields, at room temperature, through reaction of 2-propynamides and 2-propynoic esters, respectively, with AlCl3 and NaI in the presence of t-BuOH in dichlor

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