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104266-97-9

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104266-97-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 104266-97-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,2,6 and 6 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 104266-97:
(8*1)+(7*0)+(6*4)+(5*2)+(4*6)+(3*6)+(2*9)+(1*7)=109
109 % 10 = 9
So 104266-97-9 is a valid CAS Registry Number.

104266-97-9Relevant articles and documents

The Asymmetric Synthesis of α-Amino and α-Hydrazino Acid Derivatives via The Stereoselective Amination of Chiral Enolates with Azodicarboxylate Esters.

Evans, David A.,Britton, Thomas C.,Dorow, Roberta L.,Dellaria, Joseph F.

, p. 5525 - 5540 (2007/10/02)

The utility of azodicarboxylate esters as (+)NH2 and (+)NH-NH2 synthons in highly diastereoselective reactions with chiral carboximide-derived enolates has been demonstrated.The lithium enolates derived from 4-substituted N-acyl 2-oxazolidinones were found to react with di-tert-butyl azodicarboxylate (DBAD) to afford the derived 2-hydrazido carboxylic acid derivetives in yields in excess of 90 percent.The diastereoselectivities of these reactions ranged from 97percent to greater than 99percent.The subsequent transformation of these adducts to both α-hydrazino and α-amino acids in enantiomeric purities in excess of 99percent is described.

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