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5-methyl-3,3-diphenyl-3H-benzo[b]thiophen-2-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

57780-66-2

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57780-66-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57780-66-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,8 and 0 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 57780-66:
(7*5)+(6*7)+(5*7)+(4*8)+(3*0)+(2*6)+(1*6)=162
162 % 10 = 2
So 57780-66-2 is a valid CAS Registry Number.

57780-66-2Relevant academic research and scientific papers

SYNTHESIS AND REARRANGEMENT OF DIARYL-HYDROXY-BENZOTHIOPHENS. A NEW SYNTHESIS OF 2,3-DIARYL-BENZOTHIOPHENS

Leardini, Rino,Tundo, Antonio,Zanardi, Giuseppe,Pedulli, Gianfranco

, p. 3381 - 3382 (2007/10/02)

The synthesis of some 2-hydroxy-2(H)-3,3-diaryl- and 3-hydroxy-3(H)-2,2-diaryl-benzothiophens (4) and (7) respectively is described; by acidic treatment these compounds readily rearrange to 2,3-diaryl-benzothiophens (5) in almost quantitative yields

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