Cas 1643450-72-9,C22H17NO3S

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Check Digit Verification of cas no

The CAS Registry Mumber 1643450-72-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,4,3,4,5 and 0 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1643450-72:
(9*1)+(8*6)+(7*4)+(6*3)+(5*4)+(4*5)+(3*0)+(2*7)+(1*2)=159
159 % 10 = 9
So 1643450-72-9 is a valid CAS Registry Number.

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1643450-72-9Relevant academic research and scientific papers

Synthesis of α,β-unsaturated amides and iminocoumarins from N,N-disulfonyl ynamides with aldehydes via the ketenimine intermediate

Yu, Lian,Cao, Jian

, p. 3986 - 3990 (2014/06/09)

A novel synthesis of α,β-unsaturated amides from N,N-disulfonyl ynamides with aldehydes was developed. By utilization of salicylaldehydes, a variety of substituted iminocoumarins were prepared. This journal is the Partner Organisations 2014.

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