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1454691-21-4

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1454691-21-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1454691-21-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,5,4,6,9 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1454691-21:
(9*1)+(8*4)+(7*5)+(6*4)+(5*6)+(4*9)+(3*1)+(2*2)+(1*1)=174
174 % 10 = 4
So 1454691-21-4 is a valid CAS Registry Number.

1454691-21-4Downstream Products

1454691-21-4Relevant articles and documents

Studies on the chemoenzymatic synthesis of (R)- and (S)-methyl 3-aryl-3-hydroxypropionates: The influence of toluene-pretreatment of lipase preparations on enantioselective transesterifications

Borowiecki, Pawel,Bretner, Maria

, p. 925 - 936 (2013/09/23)

Two series (para- and meta-substituted) of racemic methyl esters of 3-aryl-3-hydroxypropionic acid were prepared after which the enantiomers were separated by an enzyme-catalyzed transesterification. Several lipases were investigated as the catalyst. The influence of the enzyme pretreatment, as well as substrate concentration, reaction temperature, stirring manner, and substrate conversion on the stereochemical outcome of the biotransformation process were investigated in detail. The best results were achieved by using solvent-pretreated lipase from Pseudomonas fluorescens or Burkholderia cepacia suspended in toluene, and vinyl acetate as the acetyl group donor.

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