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20031-38-3

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20031-38-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20031-38-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,0,3 and 1 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 20031-38:
(7*2)+(6*0)+(5*0)+(4*3)+(3*1)+(2*3)+(1*8)=43
43 % 10 = 3
So 20031-38-3 is a valid CAS Registry Number.

20031-38-3Relevant articles and documents

Synthesis of Di(hetero)arylamines from Nitrosoarenes and Boronic Acids: A General, Mild, and Transition-Metal-Free Coupling

Roscales, Silvia,Csák?, Aurelio G.

supporting information, p. 1667 - 1671 (2018/03/23)

The synthesis of di(hetero)arylamines by a transition-metal-free cross-coupling between nitrosoarenes and boronic acids is reported. The procedure is experimentally simple, fast, mild, and scalable and has a wide functional group tolerance, including carbonyls, nitro, halogens, free OH and NH groups. It also permits the synthesis of sterically hindered compounds.

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