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404909-83-7

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404909-83-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 404909-83-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,4,9,0 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 404909-83:
(8*4)+(7*0)+(6*4)+(5*9)+(4*0)+(3*9)+(2*8)+(1*3)=147
147 % 10 = 7
So 404909-83-7 is a valid CAS Registry Number.

404909-83-7Relevant articles and documents

Kinetic control of proline amide rotamers: Total synthesis of trans,trans- and cis,cis-ceratospongamide

Deng, Shaojiang,Taunton, Jack

, p. 916 - 917 (2007/10/03)

Ceratospongamide is a cyclic peptide natural product that is biosynthesized as a mixture of two proline rotamers. Remarkably, these rotamers do not detectably interconvert at temperatures up to 100 °C. Here we report high-yielding syntheses of each rotame

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