128913-22-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128913-22-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,9,1 and 3 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 128913-22:
(8*1)+(7*2)+(6*8)+(5*9)+(4*1)+(3*3)+(2*2)+(1*2)=134
134 % 10 = 4
So 128913-22-4 is a valid CAS Registry Number.
128913-22-4Relevant articles and documents
Synthesis of Chiral N-Protected α-Amino-β-Diketones from α-Diazoketones Derived from Natural Amino Acids
Ye, Tao,McKervey, M. Anthony
, p. 8007 - 8022 (2007/10/02)
α-Diazoketols, prepared by condensation of aldehydes or ketones with lithiated optically active α-diazoketones derived from natural amino acids, rearrange to homochiral α-amino-β-diketones on treatment with rhodium(II) acetate.
