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209910-43-0

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209910-43-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 209910-43-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,9,1 and 0 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 209910-43:
(8*2)+(7*0)+(6*9)+(5*9)+(4*1)+(3*0)+(2*4)+(1*3)=130
130 % 10 = 0
So 209910-43-0 is a valid CAS Registry Number.

209910-43-0Relevant articles and documents

Fmoc-peptide acid chlorides in fragment coupling: Synthesis of β- casomorphin by 3+2 divergent approach

Suresh Babu,Gayathri,Gopi

, p. 79 - 91 (2007/10/03)

Fmoc-peptide acid chlorides are prepared and used as rapid and efficient coupling agents in fragment coupling. Thus the synthesis of the model tetrapeptide Leu-Ala-Gly-Val and β-casomorhin (Tyr-Pro-Phe-Pro-Gly) are accomplished by the (2+2) and (3+2) divergent approach respectively.

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