Cas 83757-91-9,3,4-Di-tert-butyl-6-(dimethoxyphosphoryl)-5-phenylpyridazin

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Check Digit Verification of cas no

The CAS Registry Mumber 83757-91-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,7,5 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 83757-91:
(7*8)+(6*3)+(5*7)+(4*5)+(3*7)+(2*9)+(1*1)=169
169 % 10 = 9
So 83757-91-9 is a valid CAS Registry Number.

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83757-91-9Relevant academic research and scientific papers

Investigations on Diazo Compounds and Azides, XLII. (Diazomethyl)cyclopropenes by Electophilic Diazoalkane Substitution

Heydt, Annemarie,Heydt, Heinrich,Weber, Bernd,Regitz, Manfred

, p. 2965 - 2980 (2007/10/02)

The (diazomethyl)cyclopropenes 9 and 10 are formed via electrophilic diazoalkane substitution preferably of diazomethylphosphoryl compounds with cyclopropenylium salts.Either the diazomethyl compounds (7a - c) react with the cyclopropenylium salts 6a - e

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