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4458-61-1

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4458-61-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4458-61-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,4,5 and 8 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4458-61:
(6*4)+(5*4)+(4*5)+(3*8)+(2*6)+(1*1)=101
101 % 10 = 1
So 4458-61-1 is a valid CAS Registry Number.

4458-61-1Downstream Products

4458-61-1Relevant articles and documents

Diastereoface-Differentiating Synthesis of Substituted β-Lactams from Chiral Imines and/or Chiral α-Chloro Iminium Chlorides

Rogalska, Ewa,Belzecki, Czeslaw

, p. 1397 - 1402 (2007/10/02)

Reaction of imines carrying a chiral substituent at a nitrogen atom with symmetric or prochiral α-chloro iminium chlorides leads in a diastereoface-differentiating reaction to a mixture of diatereoisomeric or epimeric β-lactams.Attempts were made to determine the absolute configuration of obtained chiral β-lactams.Reaction of prochiral imines with chiral α-chloro iminium chlorides also provides mixtures of diastereomeric β-lactams or their enantiomers with a clear selectivity.

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