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71559-15-4

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71559-15-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71559-15-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,5,5 and 9 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 71559-15:
(7*7)+(6*1)+(5*5)+(4*5)+(3*9)+(2*1)+(1*5)=134
134 % 10 = 4
So 71559-15-4 is a valid CAS Registry Number.

71559-15-4Relevant articles and documents

Regiodivergent synthesis of functionalized pyrimidines and imidazoles through phenacyl azides in deep eutectic solvents

Vitale, Paola,Cicco, Luciana,Cellamare, Ilaria,Perna, Filippo M.,Salomone, Antonio,Capriati, Vito

, p. 1915 - 1923 (2020)

We report that phenacyl azides are key compounds for a regiodivergent synthesis of valuable, functionalized imidazole (32–98% yield) and pyrimidine derivatives (45–88% yield), with a broad substrate scope, when using deep eutectic solvents [choline chloride (ChCl)/glycerol (1:2 mol/mol) and ChCl/urea (1:2 mol/mol)] as environmentally benign and non-innocent reaction media, by modulating the temperature (25 or 80 °C) in the presence or absence of bases (Et3N).

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