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123542-78-9

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123542-78-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123542-78-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,5,4 and 2 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 123542-78:
(8*1)+(7*2)+(6*3)+(5*5)+(4*4)+(3*2)+(2*7)+(1*8)=109
109 % 10 = 9
So 123542-78-9 is a valid CAS Registry Number.

123542-78-9Downstream Products

123542-78-9Relevant articles and documents

A New Approach to Enantiomerically Pure β-Lactams from α-Amino Acids by Applying the Isonitrile-Nitrile Rearrangement

Haaf, Klaus,Ruechardt, Christoph

, p. 635 - 638 (2007/10/02)

(S)-Phenylalanine (1) was converted into (S)-3-benzyl-2-azetidinone (8b) by a multistep reaction sequence.The key step of this approach is a stereospecific isonitrile-nitrile rearrangement ( 3 -> 4) by flash pyrolysis, which may be performed in 20-g batch

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