220273-49-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220273-49-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,2,7 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 220273-49:
(8*2)+(7*2)+(6*0)+(5*2)+(4*7)+(3*3)+(2*4)+(1*9)=94
94 % 10 = 4
So 220273-49-4 is a valid CAS Registry Number.
220273-49-4Relevant academic research and scientific papers
A stereoselective synthesis of bis-β-amino acids
Adamczyk, Maciej,Reddy, Rajarathnam E.
, p. 3919 - 3921 (2007/10/03)
Enantiopure bis-β-amino acids (5a-c) were prepared from chiral bis- sulfinimines (3a-c) in >97% ee via stereoselective addition of the sodium enolate of methyl acetate followed by hydrolysis.
