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1028342-20-2

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1028342-20-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1028342-20-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,8,3,4 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1028342-20:
(9*1)+(8*0)+(7*2)+(6*8)+(5*3)+(4*4)+(3*2)+(2*2)+(1*0)=112
112 % 10 = 2
So 1028342-20-2 is a valid CAS Registry Number.

1028342-20-2Relevant articles and documents

Enantioselective 1,3-dipolar cycloaddition of nitrones with ethyl vinyl ether: The difference between Bronsted and Lewis acid catalysis

Jiao, Peng,Nakashima, Daisuke,Yamamoto, Hisashi

, p. 2411 - 2413 (2008/12/23)

(Chemical Equation Presented) Bronsted and Lewis face off: A new chiral N-triflyl phosphoramide is used for asymmetric 1,3-dipolar cycloaddition of diaryl nitrones to ethyl vinyl ether to give the endo products in up to 93% ee (see scheme; Tf = trifluoromethanesulfonyl; Ad = adamantyl). The structure of the chiral phosphoramide was confirmed by X-ray crystallographic analysis.

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