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2-(2'-chloro-styryl)-quinoxaline is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

19904-34-8

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19904-34-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19904-34-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,9,0 and 4 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 19904-34:
(7*1)+(6*9)+(5*9)+(4*0)+(3*4)+(2*3)+(1*4)=128
128 % 10 = 8
So 19904-34-8 is a valid CAS Registry Number.

19904-34-8Relevant academic research and scientific papers

Asymmetric hydrogenation of quinoxalines with diphosphinite ligands: A practical synthesis of enantioenriched, substituted tetrahydroquinoxalines

Tang, Weijun,Xu, Lijin,Fan, Qing-Hua,Wang, Jun,Fan, Baomin,Zhou, Zhongyuan,Lam, Kim-Hung,Chan, Albert S. C.

supporting information; experimental part, p. 9135 - 9138 (2010/02/28)

An easily accessible chiral lr/H8-binapo catalyst exhibits unprecedented reactivity and excellent enantioselectivity in the hydrogenation of quinoxalines at a high ratio of substrate to catalyst (from 100 to 20000). This new method provides a p

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