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201279-57-4

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201279-57-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 201279-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,2,7 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 201279-57:
(8*2)+(7*0)+(6*1)+(5*2)+(4*7)+(3*9)+(2*5)+(1*7)=104
104 % 10 = 4
So 201279-57-4 is a valid CAS Registry Number.

201279-57-4Downstream Products

201279-57-4Relevant articles and documents

Asymmetry induction on the [4C(4π)+3C(2π)] cycloaddition reaction of C2-functionalized furans: Influence of the chiral auxiliary nature

Monta?a, Angel M,Grima, Pedro M

, p. 4769 - 4786 (2002)

The study of the π-facial diastereoselectivity in the [4+3] cycloaddition reaction of thirteen different chiral 2-substituted furans with oxyallyl cations, under sonochemical and/or thermal conditions, is presented. In almost all studied furans, a cis diastereoselectivity and a high endo diastereoselectivity is observed. Decreasing the distance between the closest stereocenter of the chiral auxiliary and the reactive C2-carbon of the furan ring, increases the π-facial diastereoselectivity, especially by using chiral furyl-sulfoxides.

The configurational assignment of the optically active 5-(1-hydro- peroxyethyl)-3-ethoxycarbonyl-2-methylfuran and its alcohol by exciton- coupled circular dichroism (ECCD)

Adam, Waldemar,Humpf, Hans-Ulrich,Korb, Marion N.,Schreier, Peter

, p. 3555 - 3558 (2007/10/03)

The absolute configuration of the furan-derived hydroperoxide 1 and its alcohol 2, readily available in optically active form by kinetic resolution of the racemic hydroperoxide with horseradish peroxidase (HRP), was determined by the exciton-coupled circular dichroism (ECCD) method on their 2-naphthoate derivatives 4.

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