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25153-08-6

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25153-08-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 25153-08-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,1,5 and 3 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 25153-08:
(7*2)+(6*5)+(5*1)+(4*5)+(3*3)+(2*0)+(1*8)=86
86 % 10 = 6
So 25153-08-6 is a valid CAS Registry Number.

25153-08-6Downstream Products

25153-08-6Relevant articles and documents

A new method for production of chiral 2-aryloxypropanoic acids using effective kinetic resolution of racemic 2-aryloxycarboxylic acids

Tengeiji, Atsushi,Nakata, Kenya,Ono, Keisuke,Shiina, Isamu

, p. 1227 - 1252 (2013/08/23)

We report a novel method for the preparation of 2-aryloxypropanoic acids by kinetic resolution of racemic 2-aryloxypropanoic acids using enantioselective esterification. The usage of pivalic anhydride (Piv2O) as an activating agent, bis(a-naphthyl)methanol ((α-Np)2CHOH) as an achiral alcohol, and (+)-benzotetramisole ((+)-BTM) as a chiral acyl-transfer catalyst enables the effective separation of various racemic 2-aryloxypropanoic acids to afford optically active carboxylic acids and the corresponding esters with high enantioselectivities. Furthermore, theoretical calculations of the transition states required to form the chiral esters successfully proved the enantiomer recognition mechanism of the asymmetric esterification.

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