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100151-21-1

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100151-21-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 100151-21-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,1,5 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 100151-21:
(8*1)+(7*0)+(6*0)+(5*1)+(4*5)+(3*1)+(2*2)+(1*1)=41
41 % 10 = 1
So 100151-21-1 is a valid CAS Registry Number.

100151-21-1Upstream product

100151-21-1Downstream Products

100151-21-1Relevant articles and documents

Keto-Enol Equilibria in Mixed Acetic Sulphuric Anhydrides

Montoneri, Enzo,Tempesti, Ezio,Giuffre, Luigi,Castoldi, Aldo

, p. 662 - 667 (2007/10/02)

Mixed acetic sulphuric anhydrides obtained from both equimolar SO3-AcOH and SO3-Ac2O systems in liquid SO2 are found at low temperature (=.CO.OSO3Y) and enol (CH:COH.OSO3Y) forms (Y=SO3(1-) or Ac).At room temperature a cleavage reaction is shown to occur through the intermediacy of keten, which reacts further to yield oligomers and sulpho-derivatives . This cleavage reaction appears specifically not to involve participation of acetylium ions, whereas previously these ions were normally considered as the principal precursor of keten intermediates.

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