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1220831-39-9

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1220831-39-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1220831-39-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,0,8,3 and 1 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1220831-39:
(9*1)+(8*2)+(7*2)+(6*0)+(5*8)+(4*3)+(3*1)+(2*3)+(1*9)=109
109 % 10 = 9
So 1220831-39-9 is a valid CAS Registry Number.

1220831-39-9Relevant articles and documents

Copper-mediated cross-coupling-cyclization-oxidation: A one-pot reaction to construct polysubstituted pyrroles

Liu, Pei,Liu, Jin-Ling,Wang, Heng-Shan,Pan, Ying-Ming,Liang, Hong,Chen, Zhen-Feng

supporting information, p. 4795 - 4798 (2014/05/06)

A novel and efficient procedure for the synthesis of polysubstituted pyrroles has been developed in this work. The polysubsituted pyrroles were synthesized directly from terminal alkenes, amines and β-keto esters through cross-coupling-cyclization-oxidation in the presence of a catalytic amount of cuprous chloride. This method provides a one-pot synthesis route from terminal alkenes to polysubstituted pyrroles for the first time and opens a new area in cuprous catalysis. The Royal Society of Chemistry 2014.

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