Cas 1245447-33-9,2,5-bis(4-methoxyphenyl)-1-m-tolylpyrrole

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Check Digit Verification of cas no

The CAS Registry Mumber 1245447-33-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,5,4,4 and 7 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1245447-33:
(9*1)+(8*2)+(7*4)+(6*5)+(5*4)+(4*4)+(3*7)+(2*3)+(1*3)=149
149 % 10 = 9
So 1245447-33-9 is a valid CAS Registry Number.

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1245447-33-9Relevant academic research and scientific papers

CuCl-catalyzed cycloaddition of 1,3-butadiynes with primary amines: An atom-economic process for synthesis of 1,2,5-trisubsituted pyrroles

Zheng, Qingwei,Hua, Ruimao

supporting information; experimental part, p. 4512 - 4514 (2010/10/02)

1,3-Butadiynes underwent inter- and intramolecular double hydroamination with primary amines in the presence of CuCl at 100°C to afford 1,2,5-trisubsituted pyrroles in good to high yields.

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