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129544-44-1

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129544-44-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129544-44-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,5,4 and 4 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 129544-44:
(8*1)+(7*2)+(6*9)+(5*5)+(4*4)+(3*4)+(2*4)+(1*4)=141
141 % 10 = 1
So 129544-44-1 is a valid CAS Registry Number.

129544-44-1Relevant articles and documents

A novel synthetic approach to α-alkylidene-β-lactams

Alcaide,Plumet,Rodriguez-Lopez,Sanchez-Cantalejo

, p. 2493 - 2496 (2007/10/02)

A simple strategy for the synthesis of various α-alkylidene-β-lactams 4 based upon the condensation between lithium enolates of 3-(N,N-dialkylamino)esters and imines followed by straightforward deamination of the resulting 3-aminoalkyl-β-lactams 3 is outlined. The synthesis of α-alkylidene-β-formyl-β-lactams is a particularly significant feature of this work.

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