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123231-73-2

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123231-73-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123231-73-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,2,3 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 123231-73:
(8*1)+(7*2)+(6*3)+(5*2)+(4*3)+(3*1)+(2*7)+(1*3)=82
82 % 10 = 2
So 123231-73-2 is a valid CAS Registry Number.

123231-73-2Downstream Products

123231-73-2Relevant articles and documents

Enzymatic resolution of norbor(NE)nylmethanols in organic media and an application to the synthesis of (+)- and (-)-endo-norbornene lactone

Janssen,Klunder,Zwanenburg

, p. 5513 - 5538 (2007/10/02)

The enzymatic resolution of some norbornene carboxylic acids, norbornenylmethanols and -methylamines was evaluated. The kinetic resolution of norbornyl- and norbornenylmethanols by Porcine Pancreatic Lipase (PPL)-catalyzed transesterification in methyl acetate as the solvent leads to corresponding acetates and remaining methanols both of high enantiomeric purity. A useful application is the synthesis of both enantiomers of endo-norbornene lactone 8n via transesterification of iodolactone 18. The influence of structural variations on the efficiency of the PPL-catalyzed resolution of lactone methanols 21, 23, 25 and 28, at the optimal reaction conditions established for iodolactone 18, was investigated.

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