Cas 69921-31-9,N-(4-chlorophenyl)-N'-methyl-N'-propargylurea

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Check Digit Verification of cas no

The CAS Registry Mumber 69921-31-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,9,2 and 1 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 69921-31:
(7*6)+(6*9)+(5*9)+(4*2)+(3*1)+(2*3)+(1*1)=159
159 % 10 = 9
So 69921-31-9 is a valid CAS Registry Number.

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69921-31-9Relevant academic research and scientific papers

Copper(II)-Catalyzed Alkoxyhalogenation of Alkynyl Ureas and Amides as a Route to Haloalkylidene-Substituted Heterocycles

Gazzola, Silvia,Beccalli, Egle M.,Borelli, Tea,Castellano, Carlo,Chiacchio, Maria Assunta,Diamante, Daria,Broggini, Gianluigi

, p. 7226 - 7234 (2015)

A highly effective synthesis of haloalkylidene-substituted heterocycles by copper(II)-catalyzed cyclization of alkynyl ureas and secondary amides has been developed. The reaction, which involves a catalytic amount of CuCl2 and a stoichiometric

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