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240801-32-5

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240801-32-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 240801-32-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,0,8,0 and 1 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 240801-32:
(8*2)+(7*4)+(6*0)+(5*8)+(4*0)+(3*1)+(2*3)+(1*2)=95
95 % 10 = 5
So 240801-32-5 is a valid CAS Registry Number.

240801-32-5Downstream Products

240801-32-5Relevant articles and documents

The effect of vinyl esters on the enantioselectivity of the lipase-catalysed transesterification of alcohols

Kawasaki, Masashi,Goto, Michimasa,Kawabata, Shigeki,Kometani, Tadashi

, p. 585 - 596 (2007/10/03)

The enantioselectivity of the lipase from Pseudomonas cepacia (PCL) in the transesterification of 2-phenyl-1-propanol 1 was studied using a series of vinyl 3-arylpropanoates as acyl donors. The most enantioselective transesterification reaction of the alcohol was attained by using vinyl 3-(p-iodophenyl)- or 3-(p-trifluoromethylphenyl)propanoates, with enantiomer ratios, E, of 116 and 138, respectively. Vinyl 3-phenylpropanoate was also effective for the resolution of 1 mediated by lipases from P. fluorescens and porcine pancreas and for the PCL-catalysed transesterification of several 2-phenyl-1-alkanols. The enantiomeric resolution of 1 was practically carried out by the first enantioselective transesterification using PCL and vinyl 3-(p-iodophenyl)propanoate to afford (R)-1 and then the enantioselective hydrolysis of the resultant ester to afford (S)-1.

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