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959975-13-4

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959975-13-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 959975-13-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,9,9,7 and 5 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 959975-13:
(8*9)+(7*5)+(6*9)+(5*9)+(4*7)+(3*5)+(2*1)+(1*3)=254
254 % 10 = 4
So 959975-13-4 is a valid CAS Registry Number.

959975-13-4Relevant academic research and scientific papers

Copper/silver-cocatalyzed conia-ene reaction of linear β-alkynic β-ketoesters

Deng, Chen-Liang,Song, Ren-Jie,Guo, Sheng-Mei,Wang, Zhi-Qiang,Li, Jin-Heng

, p. 5111 - 5114 (2007)

A novel and general copper/silver catalytic system has been developed for the Conia-ene intramolecular reaction of linear β-alkynic β-ketoesters. In the presence of (CuOTf)2·C 6H6 and AgSbF6 (or AgOAc), a variety of the linear β-alkynic β-ketoesters selectively underwent the Conia-ene intramolecular reaction in moderate to good yields.

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