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40723-99-7

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40723-99-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40723-99-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,7,2 and 3 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 40723-99:
(7*4)+(6*0)+(5*7)+(4*2)+(3*3)+(2*9)+(1*9)=107
107 % 10 = 7
So 40723-99-7 is a valid CAS Registry Number.

40723-99-7Downstream Products

40723-99-7Relevant articles and documents

Palladium-catalyzed cross-coupling reaction of alkenyl aluminums with 2-bromobenzo[b]furans

Jiang, Xin,Li, Qinghan,Luo, Ruiqiang,Wen, Chang,Wu, Kun

, p. 19610 - 19614 (2020)

Highly efficient and simple cross-coupling reactions of 2-bromobenzo[b]furans with alkenylaluminum reagents for the synthesis of 2-alkenylbenzo[b]furan derivatives using PdCl2(3 mol%)/XantPhos (6 mol%) as catalyst are reported. Excellent yields (up to 97%) were obtained for a wide range of substrates at 80 °C for 4 h in DCE.

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