137283-21-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137283-21-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,2,8 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 137283-21:
(8*1)+(7*3)+(6*7)+(5*2)+(4*8)+(3*3)+(2*2)+(1*1)=127
127 % 10 = 7
So 137283-21-7 is a valid CAS Registry Number.
137283-21-7Relevant articles and documents
Preparation of 2-substituted vinylamino acid derivatives
Osuku Opio,Labidalle,Galons,Miocque,Zaparucha,Loupy
, p. 1743 - 1754 (2007/10/02)
Solid-liquid phase transfer catalysis in the absence of any added solvent efficiently promotes Michael addition of glycine Schiff bases to phenylvinylsulfoxide. The vinyl group was formed by thermolysis of the phenylsulfinyl function.
