Cas 73723-20-3,5-(4-Anisoylamino)-1,2,3-thiadiazol-4-carbonsaeure-ethylester

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Check Digit Verification of cas no

The CAS Registry Mumber 73723-20-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,7,2 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 73723-20:
(7*7)+(6*3)+(5*7)+(4*2)+(3*3)+(2*2)+(1*0)=123
123 % 10 = 3
So 73723-20-3 is a valid CAS Registry Number.

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73723-20-3Relevant academic research and scientific papers

Investigations on Diazo Compounds and Azides, XXXV. - Acylation of Diazomethylphosphoryl and Diazomethylcarbonyl Compounds with Acyl Isocyanates and Isothiocyanates

Regitz, Manfred,Weber, Bernd,Heydt, Annemarie

, p. 305 - 323 (2007/10/02)

The aroyl isocyanates 7a-c react with the diazomethylphosphoryl compounds 8a-d with formation of the phosphorylated diazoacetamides 9a, b and d-j as well as 1,3-oxazolin-4-ones 10b-j.The reaction of chlorosulfonyl isocyanate (13) with 8a, c, e and f proce

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