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1203709-73-2

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1203709-73-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1203709-73-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,3,7,0 and 9 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1203709-73:
(9*1)+(8*2)+(7*0)+(6*3)+(5*7)+(4*0)+(3*9)+(2*7)+(1*3)=122
122 % 10 = 2
So 1203709-73-2 is a valid CAS Registry Number.

1203709-73-2Relevant articles and documents

Halogen exchange via a halogenation of diaryliodonium salts with cuprous halide

Li, Jian,Liu, Li,Ding, Dong,Sun, Jiang-Tao

, p. 541 - 548 (2014/01/06)

An efficient halogenation reaction has been developed with diaryliodonium salts and cuprous halides. Various diaryliodonium salts 1 could perform the reaction with readily available CuBr or CuCl in CH3CN at 80°C, assembling bromoarenes or chloroarenes in up to 92% yields. This provides us a method for the transformation from iodoarenes to other haloarenes.

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