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81549-05-5

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81549-05-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81549-05-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,4 and 9 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 81549-05:
(7*8)+(6*1)+(5*5)+(4*4)+(3*9)+(2*0)+(1*5)=135
135 % 10 = 5
So 81549-05-5 is a valid CAS Registry Number.

81549-05-5Upstream product

81549-05-5Downstream Products

81549-05-5Relevant academic research and scientific papers

Synthese et reactivite de quelques α-amino azocomposes: mecanisme de la cyclisation thermique en triazoles-1,2,4

Metra, Pierre,Hamelin, Jack

, p. 285 - 290 (2007/10/02)

The reaction of O-mesitylenesulfonylhydroxylamine (MSH) with hydrazones leads to carbon amination with the formation of α-amino azo compounds.Thermolysis of these compounds affords 1,2,4-triazoles.The mechanism of this cyclization is discussed.

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