Cas 1620388-99-9,C23H18O2

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Check Digit Verification of cas no

The CAS Registry Mumber 1620388-99-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,3,8 and 8 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1620388-99:
(9*1)+(8*6)+(7*2)+(6*0)+(5*3)+(4*8)+(3*8)+(2*9)+(1*9)=169
169 % 10 = 9
So 1620388-99-9 is a valid CAS Registry Number.

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1620388-99-9Relevant academic research and scientific papers

Regioselective Suzuki-Miyaura cross-coupling reactions of the bis(triflate) of 4,7-dihydroxycoumarin

Khaddour, Zien,Akrawi, Omer A.,Suleiman, Ali S.,Patonay, Tamás,Villinger, Alexander,Langer, Peter

, p. 4421 - 4423 (2014/08/05)

Arylated coumarins were prepared by site-selective Suzuki-Miyaura cross-coupling reaction of the bis(triflate) of 4,7-dihydroxycoumarin. The reactions proceeded by initial attack to the sterically more hindered position, due to electronic reasons.

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