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89617-50-5

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89617-50-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89617-50-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,6,1 and 7 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 89617-50:
(7*8)+(6*9)+(5*6)+(4*1)+(3*7)+(2*5)+(1*0)=175
175 % 10 = 5
So 89617-50-5 is a valid CAS Registry Number.

89617-50-5Downstream Products

89617-50-5Relevant 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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