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129374-52-3

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129374-52-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129374-52-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,3,7 and 4 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 129374-52:
(8*1)+(7*2)+(6*9)+(5*3)+(4*7)+(3*4)+(2*5)+(1*2)=143
143 % 10 = 3
So 129374-52-3 is a valid CAS Registry Number.

129374-52-3Relevant articles and documents

THE SYNTHESIS OF CARBAPENEM AND CARBACEPHEM DERIVATIVES BY A COMBINATION OF 4CC WITH THE CHEMISTRY OF OXAZOLINES AND N-BOC-CARBONAMIDES

Neyer, Gebhard,Achatz, Josef,Danzer, Bernhard,Ugi, Ivar

, p. 863 - 869 (2007/10/02)

A synthetic approach to carbapenem and carbacephem derivatives is described.It is based on the formation of the N-carboxymethyl-β-lactam system by a four component condensation, the cleavage of a carbonamide via the N-Boc-carbonamides and esters, and the

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