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97207-55-1

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97207-55-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97207-55-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,2,0 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 97207-55:
(7*9)+(6*7)+(5*2)+(4*0)+(3*7)+(2*5)+(1*5)=151
151 % 10 = 1
So 97207-55-1 is a valid CAS Registry Number.

97207-55-1Relevant articles and documents

Novel indole-ring formation by thermolysis of 2-(N-acylamino)benzylphosphonium salts. Effective synthesis of 2-trifluoromethylindoles

Miyashita, Kazuyuki,Kondoh, Katsunori,Tsuchiya, Katsutoshi,Miyabe, Hideto,Imanishi, Takeshi

, p. 1261 - 1268 (2007/10/03)

Thermolysis of 2-(N-acylamino)benzyl methyl ethers, in the presence of an acid catalyst and triphenylphosphine, or 2-(N-acylamino)benzylphosphonium salts is found to serve as a novel method for indole formation, in particular for the synthesis of 2-trifluoromethylindoles. The reaction of the benzyl methyl ethers is suggested to involve a phosphonium intermediate, which thermally decomposes to the indoles.

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