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39172-97-9

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39172-97-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39172-97-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,1,7 and 2 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 39172-97:
(7*3)+(6*9)+(5*1)+(4*7)+(3*2)+(2*9)+(1*7)=139
139 % 10 = 9
So 39172-97-9 is a valid CAS Registry Number.

39172-97-9Downstream Products

39172-97-9Relevant articles and documents

Diastereoselective synthesis of indanes and tetralins via intramolecular Friedel-Crafts reaction

Begouin, Jeanne-Marie,Capitta, Francesca,Wu, Xian,Niggemann, Meike

supporting information, p. 1370 - 1373 (2013/04/23)

An easy access to tetralin and indane skeletons has been developed using a diastereoselective intramolecular Friedel-Crafts alkylation. Treatment of diastereomeric mixtures of benzyl carbinols with a catalytic amount of Ca(NTf2)2/Bu4NPF6 yields the respective tetralin or indane in good yields with high levels of regio- and diastereoselectivity.

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