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142835-88-9

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142835-88-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142835-88-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,8,3 and 5 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 142835-88:
(8*1)+(7*4)+(6*2)+(5*8)+(4*3)+(3*5)+(2*8)+(1*8)=139
139 % 10 = 9
So 142835-88-9 is a valid CAS Registry Number.

142835-88-9Relevant articles and documents

Lewis Acid-catalyzed Intramolecular Asymmetric Ene Reactions of Chiral Vinyl Sulfoxides

Hiroi, Kunio,Umemura, Masayuki

, p. 3343 - 3346 (1992)

A chiral α-cyanovinyl sulfoxide served as an efficient chiral enophile in a Lewis acid-catalyzed intramolecular ene reaction.Use of diethylaluminum chloride as a catalyst provided extremely high stereoselectivity in this ene reaction.Based on the stereochemical results obtained, a mechanistic pathway for this asymmetric induction is presented.

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