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57427-93-7

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57427-93-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57427-93-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,4,2 and 7 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 57427-93:
(7*5)+(6*7)+(5*4)+(4*2)+(3*7)+(2*9)+(1*3)=147
147 % 10 = 7
So 57427-93-7 is a valid CAS Registry Number.

57427-93-7Relevant articles and documents

A catalytic asymmetric hetero-Diels-Alder reaction of olefinic azlactones and isatins: Facile access to chiral spirooxindole dihydropyranones

Gao, Tai-Ping,Lin, Jun-Bing,Hu, Xiu-Qin,Xu, Peng-Fei

, p. 8934 - 8936 (2014/08/05)

A catalytic asymmetric hetero-Diels-Alder (HDA) reaction has been achieved through hydrogen-bond directed γ-addition of olefinic azlactones to isatins. This methodology provides an efficient access to spirooxindole dihydropyranones in moderate to good yie

On the Synthesis of Geometric Isomers of 2-Methyl (or Phenyl)-4--5(4H)-oxazolones

Cativiela, C.,Diaz de Villegas, M. D.,Melendez, E.

, p. 1655 - 1657 (2007/10/02)

Several Z-2-methyl(or phenyl)-4--5(4H)-oxazolones 3Z, 4Z were prepared.The results obtained were compared by diazomethane insertion and condensation procedure.In order to synthetize E-2-phenyl-4--5-(4H)-oxazolones 4E hy

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