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71344-43-9

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71344-43-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71344-43-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,3,4 and 4 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 71344-43:
(7*7)+(6*1)+(5*3)+(4*4)+(3*4)+(2*4)+(1*3)=109
109 % 10 = 9
So 71344-43-9 is a valid CAS Registry Number.

71344-43-9Downstream Products

71344-43-9Relevant articles and documents

Tandem reaction between chalcone epoxides and 2-naphthyl ethers to construct complex naphtho[2,1-b]furans

Huo, Congde,An, Jinzhu,Xu, Xiaolan,Jia, Xiaodong,Wang, Xicun,Kang, Lisheng

, p. 1145 - 1148 (2013/03/13)

The reaction of chalcone epoxides with 2-naphthyl ethers can be initiated by stable triarylaminium salt. And after subsequent aerobic oxidative aromatization in one pot, a series of polysubstituted naphtho[2,1-b]furans were delivered.

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