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1373121-39-1

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1373121-39-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1373121-39-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,3,1,2 and 1 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1373121-39:
(9*1)+(8*3)+(7*7)+(6*3)+(5*1)+(4*2)+(3*1)+(2*3)+(1*9)=131
131 % 10 = 1
So 1373121-39-1 is a valid CAS Registry Number.

1373121-39-1Downstream Products

1373121-39-1Relevant articles and documents

Enantioselective synthesis of dihydropyrazoles by formal [4+1] cycloaddition of in situ-derived azoalkenes and sulfur ylides

Chen, Jia-Rong,Dong, Wan-Rong,Candy, Mathieu,Pan, Fang-Fang,Joerres, Manuel,Bolm, Carsten

, p. 6924 - 6927 (2012/06/15)

An unprecedented strategy to access highly enantioenriched dihydropyrazoles is described. It involves formal [4+1] cycloadditions of in situ-derived azoalkenes and sulfur ylides catalyzed by a chiral copper/Tol-BINAP complex. A variety of synthetically and biologically important dihydropyrazoles have been obtained with high enantioselectivities (up to 97:3 er) in good yields (83-97%).

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