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141978-58-7

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141978-58-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 141978-58-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,9,7 and 8 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 141978-58:
(8*1)+(7*4)+(6*1)+(5*9)+(4*7)+(3*8)+(2*5)+(1*8)=157
157 % 10 = 7
So 141978-58-7 is a valid CAS Registry Number.

141978-58-7Relevant articles and documents

Dinuclear zinc-catalyzed asymmetric desymmetrization of acyclic 2-substituted-1,3-propanediols: A powerful entry into chiral building blocks

Trost, Barry M.,Malhotra, Sushant,Mino, Takashi,Rajapaksa, Naomi S.

supporting information; experimental part, p. 7648 - 7657 (2009/08/19)

The asymmetric acylation of meso-2-substituted-1,3-propanediols by using an amphoteric chiral dinuclear zinc catalyst is described. It is has been demonstrated that both 2-alkyl- and 2-aryl-1,3-propanediols can be desymmetrized in high yields and enantioselectivities by using the same family of ligands. Given that both antipodes of the chiral catalyst are available, both enantiomers of the desymmetrized product can be obtained from the same starting material. The synthetic utility of the desymmetrized products has been demonstrated by the synthesis of several chiral building blocks with high enantiomeric purities.

Desymmetrization of meso 1,3- and 1,4-diols with a dinuclear zinc asymmetric catalyst

Trost, Barry M.,Mino, Takashi

, p. 2410 - 2411 (2007/10/03)

A dinuclear asymmetric zinc catalyst generated by mixing a 2:1 ratio of diethylzinc and 2,6-bis[5-2-diarylhydroxy methyl-1-pyrrolidinyl]-4-methylphenol has been contrasted with enzymes for the desymmetrization of some meso diols. The best ligand has a p-b

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