Cas 53940-21-9,2-(4-Nitro-phenylazo)-3-oxo-3,N-diphenyl-thiopropionamide

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Check Digit Verification of cas no

The CAS Registry Mumber 53940-21-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,9,4 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 53940-21:
(7*5)+(6*3)+(5*9)+(4*4)+(3*0)+(2*2)+(1*1)=119
119 % 10 = 9
So 53940-21-9 is a valid CAS Registry Number.

53940-21-9Upstream product

100-01-6 4-nitro-aniline

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53940-21-9Relevant academic research and scientific papers

Thiocarbamoyl in organic synthesis: Synthesis of some new arylazothiophene and arylazopyrazole derivatives

Fadda,Abdel-Latif,El-Mekawy, Rasha E.

experimental part, p. 1940 - 1953 (2009/06/30)

Arylazothiocarbamoyl derivatives 4a-e were utilized for the synthesis of several new thiophene and pyrazole derivatives. Compound 4 reacted with phenacyl bromide, ethyl bromoacetate, chloroacetonitrile, chloroacetone and hydrazine hydrate to yield thiophe

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