Cas 497868-54-9,3,4-Pyrazolidinedicarboxylic acid, 1,2-dibenzoyl-5-(2-phenylethyl)-, dimethyl ester, (3R,4S,5S)-

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Check Digit Verification of cas no

The CAS Registry Mumber 497868-54-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,7,8,6 and 8 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 497868-54:
(8*4)+(7*9)+(6*7)+(5*8)+(4*6)+(3*8)+(2*5)+(1*4)=239
239 % 10 = 9
So 497868-54-9 is a valid CAS Registry Number.

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497868-54-9Relevant academic research and scientific papers

Asymmetric synthesis of densely functionalized pyrazolidines and 1,3-diamines

Chauveau,Martens,Bonin,Micouin,Husson

, p. 1885 - 1890 (2007/10/03)

A versatile and straightforward access to polysubstituted 1,3-diamines with good control of relative and absolute configurations is described. The key steps involve a diastereoselective 1,3-dipolar cycloaddition of a chiral non-racemic azomethine imine ylide and a chemoselective electroreduction of densely functionalized pyrazolidines intermediates.

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