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1269985-50-3

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1269985-50-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1269985-50-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,6,9,9,8 and 5 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1269985-50:
(9*1)+(8*2)+(7*6)+(6*9)+(5*9)+(4*8)+(3*5)+(2*5)+(1*0)=223
223 % 10 = 3
So 1269985-50-3 is a valid CAS Registry Number.

1269985-50-3Relevant articles and documents

Synthesis of arylated anthraquinones by site-selective Suzuki-Miyaura reactions of the bis(triflates) of 1,3-di(hydroxy)anthraquinones

Akrawi, Omer A.,Khan, Afsar,Patonay, Tamás,Villinger, Alexander,Langer, Peter

, p. 9013 - 9024 (2013/09/24)

Arylated anthraquinones were prepared by Suzuki-Miyaura reactions of the bis(triflates) of various 1,3-(dihydroxy)anthraquinones. While the reactions of the bis(triflates) of parent 1,3-(dihydroxy)anthraquinone and of 2-chloro-1,3-di(hydroxy)anthraquinone proceeded with very good site-selectivity, the corresponding reactions of the bis(triflate) of 2-fluoro-1,3- diarylanthraquinones were not site-selective, which was explained based on the π-donating effect of the fluorine atom.

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