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457059-32-4

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457059-32-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 457059-32-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,5,7,0,5 and 9 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 457059-32:
(8*4)+(7*5)+(6*7)+(5*0)+(4*5)+(3*9)+(2*3)+(1*2)=164
164 % 10 = 4
So 457059-32-4 is a valid CAS Registry Number.

457059-32-4Downstream Products

457059-32-4Relevant articles and documents

Trifluoromethyl-substituted hydantoins, versatile building blocks for rational drug design

Wehner, Volkmar,Stilz, Hans-Ulrich,Osipov, Sergej N.,Golubev, Alexander S.,Sieler, Joachim,Burger, Klaus

, p. 4295 - 4302 (2007/10/03)

Preparatively simple, one-pot syntheses of trifluoromethyl-substituted hydantoins starting from Boc-protected imines of hexafluoroacetone and trifluoropyruvate are described. They represent valuable building blocks for the construction of constrained pept

Bis(trifluoromethyl)hydantoins as intermediates for pharmaceutically active ingredients

-

, (2008/06/13)

The present invention relates to hydantoins of formula I, in which R is the residue of an amino carboxylic acid or of an amino carboxylic acid derivative, which is obtained formally by removing an NH2 group from an amino carboxylic acid or an amino carboxylic acid derivative, to the preparation thereof and to the use thereof as intermediates, in particular for preparing pharmaceutically active ingredients.

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