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1268238-64-7

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1268238-64-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1268238-64-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,6,8,2,3 and 8 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1268238-64:
(9*1)+(8*2)+(7*6)+(6*8)+(5*2)+(4*3)+(3*8)+(2*6)+(1*4)=177
177 % 10 = 7
So 1268238-64-7 is a valid CAS Registry Number.

1268238-64-7Downstream Products

1268238-64-7Relevant articles and documents

Base-promoted one-pot synthesis of pyridine derivatives via aromatic alkyne annulation using benzamides as nitrogen source

Ashiq, Muhammad Naeem,Hua, Ruimao,Iqbal, Muhammad Asif,Mehmood, Hina

supporting information, (2021/11/08)

In the presence of Cs2CO3, the first simple, efficient, and one-pot procedure for the synthesis of 3,5-diaryl pyridines via a variety of aromatic terminal alkynes with benzamides as the nitrogen source in sulfolane is described. The formation of pyridine derivatives accompanies the outcome of 1,3-diaryl propenes, which are also useful intermediates in organic synthesis. Thus, pyridine ring results from a formal [2+2+1+1] cyclocondensation of three alkynes with benzamides, and one of the alkynes provides one carbon, whilst benzamides provide a nitrogen source only. A new transformation of alkynes as well as new utility of benzamide are found in this work.

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