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109173-43-5

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109173-43-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109173-43-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,1,7 and 3 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 109173-43:
(8*1)+(7*0)+(6*9)+(5*1)+(4*7)+(3*3)+(2*4)+(1*3)=115
115 % 10 = 5
So 109173-43-5 is a valid CAS Registry Number.

109173-43-5Upstream product

109173-43-5Relevant articles and documents

Tetraacylethenes as dienophiles and hetero dienes in two-step Diels- Alder reactions

Quast, Helmut,Seefelder, Maximilian,Ivanova, Svetlana,Heubes, Markus,Peters, Eva-Maria,Peters, Karl

, p. 3343 - 3351 (1999)

Oxidation with barium manganate of the enol of tetraacetylethane (10) affords tetraacetylethylene (7a) in good yield. Treatment of the 1,3- diketones 15a and b with iodosobenzene in the presence of boron trifluoride does not result in oxidative coupling y

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