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2-Thiopheneacetic acid, a-[[5-(2-carboxy-2-phenylethenyl)-2-thienyl]methylene]-, (E,E)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

142371-33-3

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142371-33-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142371-33-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,3,7 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 142371-33:
(8*1)+(7*4)+(6*2)+(5*3)+(4*7)+(3*1)+(2*3)+(1*3)=103
103 % 10 = 3
So 142371-33-3 is a valid CAS Registry Number.

142371-33-3Relevant academic research and scientific papers

Mass Spectrometry of Some 2-Styryl- and 2,5-Distyrylfuran and -Thiophene Derivatives

Karminski-Zamola, Grace,Bajic, Miroslav,Blazevic, Nikola

, p. 615 - 618 (2007/10/02)

Mass spectra of fourteen 2-styryl- and 2,5-distyrylfuran and -thiophene derivatives are reported.Each styryl substituent has an α-carboxylic acid or methyl carboxylate substituent.Although the parent ion is the base peak for the styryl and distyryl derivatives, the distyryl species showed less fragmentation than the styryl species.In addition to simple bond cleavages, loss of formic acid or methyl formate was important in many of the species, presumably forming acetylenic fragments.

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