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77929-17-0

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77929-17-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77929-17-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,2 and 9 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77929-17:
(7*7)+(6*7)+(5*9)+(4*2)+(3*9)+(2*1)+(1*7)=180
180 % 10 = 0
So 77929-17-0 is a valid CAS Registry Number.

77929-17-0Relevant articles and documents

Enantioselective reduction of ketones by borane catalysed by oxazaphospholidine oxides

Chiodi, Olivier,Fotiadu, Frederic,Sylvestre, Maud,Buono, Gerard

, p. 39 - 42 (1996)

New enantioselective catalysts for the asymmetric reduction of ketones by borane are described. Easily prepared by oxidation of chiral oxazaphospholidines, these compounds increase sensitively the reduction rate of numerous ketones and induce ee's up to 94% in the case of the 2-chloroacetophenone.

New chiral phosphinamide catalysts for highly enantioselective reduction of ketones

Gamble, Mark P.,Studley, John R.,Wills, Martin

, p. 2853 - 2856 (2007/10/03)

A novel class of recoverable and highly stable phosphinamide catalysts for the asymmetric reduction of ketones by borane is described. Enantiomeric excesses of up to 92% have been obtained using 10 mol% of the optimum catalyst.

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