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88143-75-3

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88143-75-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 88143-75-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,8,1,4 and 3 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 88143-75:
(7*8)+(6*8)+(5*1)+(4*4)+(3*3)+(2*7)+(1*5)=153
153 % 10 = 3
So 88143-75-3 is a valid CAS Registry Number.

88143-75-3Relevant articles and documents

The direct chemical conversion of peptides to β-lactams

Miller,Mattingly

, p. 2563 - 2570 (2007/10/02)

Appropriately protected seryldipeptides which have a relatively acidic proton (H1 of 1) on the α' C can be efficiently converted to β-lactams by reaction with azodicarboxylates and triphenylphosphine. Application of the same reaction conditions to serylamides which lack an acidic α' proton provided dehydropeptides as the major product. Model reactions and potential intermediates which rationalize these results are described.

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