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7-chloro-2-(4-o-tolyloxy-but-2-ynylsulfanyl)-thiochromen-4-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

744246-73-9

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744246-73-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 744246-73-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,4,2,4 and 6 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 744246-73:
(8*7)+(7*4)+(6*4)+(5*2)+(4*4)+(3*6)+(2*7)+(1*3)=169
169 % 10 = 9
So 744246-73-9 is a valid CAS Registry Number.

744246-73-9Relevant academic research and scientific papers

Regioselective synthesis of 3-(aryloxyacetyl)-2,3-dihydrothieno-[2,3-b][1] benzothiopyran-4-ones via tandem cyclization

Majumdar,Bandyopadhyay,Ghosh

, p. 2159 - 2167 (2004)

2-[4-Aryloxybut-2-ynylthio][1]benzothiopyran-4-ones on treatment with m-chloroperoxy benzoic acid in chloroform at 0°C to room temperature afforded 3-(aryloxyacetyl)-2,3-dihydrothieno[2,3-b]benzothiopyrans in 65-70% yield. The sigmatropic [2,3] followed b

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