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511544-23-3

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511544-23-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 511544-23-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,1,1,5,4 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 511544-23:
(8*5)+(7*1)+(6*1)+(5*5)+(4*4)+(3*4)+(2*2)+(1*3)=113
113 % 10 = 3
So 511544-23-3 is a valid CAS Registry Number.

511544-23-3Downstream Products

511544-23-3Relevant articles and documents

Halo-substituted (S)-N-(2-benzoylphenyl)-1-benzylpyrolidine-2-carboxamides as new chiral auxiliaries for the asymmetric synthesis of (S)-α-amino acids

Belokon,Maleev,Petrosyan,Savel'eva,Ikonnikov,Peregudov,Khrustalev,Saghiyan

, p. 1593 - 1599 (2002)

The synthesis of new chiral auxiliaries (S)-N-(2-benzoylphenyl)-1-(3,4-dichlorobenzyl)-pyrrolidine-2-carboxamide (1a), (S)-N-(2-benzoylphenyl)-1-(pentafluorobenzyl)pyrrolidine-2-carboxamide (1b), and (S)-N-(2-benzoylphenyl)-1-(4-isopropoxytetrafluorobenzyl) pyrrolidine-2-carboxamide (1c) and their application in the asymmetric synthesis of amino acids using NiII complexes of their Schiff's bases with alanine and glycine are described. Compound la is particularly appropriate for highly stereoselective synthesis of α-methyl-α -amino acids with high enatiomeric purity (ee >95%).

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