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131269-31-3

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131269-31-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131269-31-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,2,6 and 9 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 131269-31:
(8*1)+(7*3)+(6*1)+(5*2)+(4*6)+(3*9)+(2*3)+(1*1)=103
103 % 10 = 3
So 131269-31-3 is a valid CAS Registry Number.

131269-31-3Upstream product

131269-31-3Downstream Products

131269-31-3Relevant articles and documents

The reaction of (η5-cyclopentadienyl)dicarbonyliron(2-thienoyl) with acetylenes; a mechanistic study using proton nuclear magnetic resonance, and application in synthesis

Butler, Ian R.

, p. 1979 - 1987 (2007/10/02)

The thermal reaction of dicarbonyl-η5-cyclopentadienyl(2-thienoyl)iron with a series of substituted acetylenes to give indenones and cyclopentathiophenones have been reinvestigated.The results obtained support a reaction mechanism involving initial acetylene insertion followed by that of carbon monoxide, in contradiction to the previously reported results.The reaction products were identified and characterized primarily using 2D 1H nmr spectroscopy.

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