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206346-40-9

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206346-40-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 206346-40-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,6,3,4 and 6 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 206346-40:
(8*2)+(7*0)+(6*6)+(5*3)+(4*4)+(3*6)+(2*4)+(1*0)=109
109 % 10 = 9
So 206346-40-9 is a valid CAS Registry Number.

206346-40-9Relevant articles and documents

The asymmetric synthesis of β-aryl-α-hydroxy esters from β-aryl-α,β-dihydroxy esters

Lawrence, Nicholas J,Brown, Stephen

, p. 613 - 619 (2007/10/03)

α,β-Dihydroxy-β-aryl esters obtained via Sharpless asymmetric dihydroxylation (AD) of substituted cinnamate esters are reduced by sequential reaction with trimethyl orthoacetate and acetyl bromide followed by catalytic hydrogenolysis in methanol to give enantiomerically enriched β-aryl-α-hydroxy esters.

Lipase-catalyzed transesterification as a practical route to homochiral syn-1,2-diols. The synthesis of the taxol side chain

Lee, Donghyun,Kim, Mahn-Joo

, p. 2163 - 2166 (2007/10/03)

syn-2,3-Dihydoxy-3-phenyl-propanoic acid methyl ester (1a) and its simple derivatives (1b-e) are efficiently resolved in LPS-catalyzed transesterification, leading to the synthesis of the taxol side chain and analogs from both resolved enantiomers.

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