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1571091-57-0

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1571091-57-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1571091-57-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,7,1,0,9 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1571091-57:
(9*1)+(8*5)+(7*7)+(6*1)+(5*0)+(4*9)+(3*1)+(2*5)+(1*7)=160
160 % 10 = 0
So 1571091-57-0 is a valid CAS Registry Number.

1571091-57-0Downstream Products

1571091-57-0Relevant articles and documents

A highly efficient in situ N-acetylation approach for solid phase synthesis

Chandra, Koushik,Roy, Tapta Kanchan,Naoum, Johnny N.,Gilon, Chaim,Gerber, R. Benny,Friedler, Assaf

, p. 1879 - 1884 (2014)

We describe a new general N-acetylation method for solid phase synthesis. Malonic acid is used as a precursor and the reaction proceeds by in situ formation of a reactive ketene intermediate at room temperature. We have successfully applied this methodology to peptides and non-peptidic molecules containing a variety of functional groups. The reaction gave high yields compared to known acetylation methods, irrespective of the structure, conformation and sequence of the acetylated molecule. Computational studies revealed that the concerted mechanism via the ketene intermediate is kinetically favorable and leads to a thermodynamically stable acetylated product. In conclusion, our method can be easily applied to acetylation in a wide variety of chemical reactions performed on the solid phase.

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