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39178-63-7

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39178-63-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39178-63-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,1,7 and 8 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 39178-63:
(7*3)+(6*9)+(5*1)+(4*7)+(3*8)+(2*6)+(1*3)=147
147 % 10 = 7
So 39178-63-7 is a valid CAS Registry Number.

39178-63-7Downstream Products

39178-63-7Relevant articles and documents

Benzofuran and indole synthesis via Cu(i)-catalyzed coupling of N-tosylhydrazone and o-hydroxy or o-amino phenylacetylene

Xiao, Tiebo,Dong, Xichang,Zhou, Lei

, p. 1490 - 1497 (2013/05/09)

A general and practical method to synthesize 2-substituted benzofurans and indoles is described. This method employs easily accessible N-tosylhydrazones and o-hydroxy or o-amino phenylacetylenes as substrates. The reaction proceeds through a CuBr-catalyzed coupling-allenylation-cyclization sequence under ligand-free conditions.

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