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889103-64-4

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889103-64-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 889103-64-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,9,1,0 and 3 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 889103-64:
(8*8)+(7*8)+(6*9)+(5*1)+(4*0)+(3*3)+(2*6)+(1*4)=204
204 % 10 = 4
So 889103-64-4 is a valid CAS Registry Number.

889103-64-4Relevant articles and documents

Efficient method for the asymmetric reduction of α- and β-ketophosphonates

Nesterov,Kolodiazhnyi

, p. 6720 - 6731 (2007)

An efficient and versatile method for the asymmetric reduction of α- and β-ketophosphonates using chiral reactant derived from sodium borohydride and l-(+)- or d-(-)-tartaric acid is developed. The methodology was used for the preparation of a number of biologically interesting enantiomerically pure products: including 2,3-epoxypropylphosphonate 11, 2-hydroxy-3-aminopropylphosphonic acid 14 (phospho-GABOB), phospho-carnitine 19, and others in multigram scale.

Enantioselective reduction of ketophosphonates using chiral acid adducts with sodium borohydride

Nesterov,Kolodyazhnyi

, p. 1022 - 1030 (2008/02/05)

A method for asymmetric reduction of α-and β-ketophosphonates using a chiral complex prepared from sodium borohydride and D-or L-tartaric acid is developed. Reduction of α-or β-ketophosphonates by these reagents led to formation of corresponding (S)-or (R

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