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144270-98-4

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144270-98-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 144270-98-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,2,7 and 0 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 144270-98:
(8*1)+(7*4)+(6*4)+(5*2)+(4*7)+(3*0)+(2*9)+(1*8)=124
124 % 10 = 4
So 144270-98-4 is a valid CAS Registry Number.

144270-98-4Relevant articles and documents

Convenient multigram synthesis of monodisperse oligo(ethylene glycols): Effective reaction monitoring by infrared spectroscopy using an attenuated total reflection fibre optic probe

Lumpi, Daniel,Braunshier, Christian,Hametner, Christian,Horkel, Ernst,Zachhuber, Bernhard,Lendl, Bernhard,Fr?hlich, Johannes

, p. 6469 - 6471 (2009)

A convenient approach for the synthesis of monodisperse oligo(ethylene glycols) up to 12 units is described. A novel cleavage protocol replacing laborious hydrogenolysis is introduced to achieve a fast, inexpensive and widely applicable procedure. In addition to the synthetic part, Fourier transform infrared (FTIR) spectroscopy using a fibre optic attenuated total reflection (ATR) sensor was applied to monitor the formation of sensitive key intermediates, resulting in optimized reaction times. By applying this in-line technique, the possibility of real-time analysis under inert conditions was impressively demonstrated.

A Highly Selective Synthesis of Monodisperse Oligo(ethylene glycols)

Keegstra, Erik M. D.,Zwikker, Jan W.,Roest, Martin R.,Jenneskens, Leonardus W.

, p. 6678 - 6680 (2007/10/02)

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