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127841-19-4

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127841-19-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 127841-19-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,8,4 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 127841-19:
(8*1)+(7*2)+(6*7)+(5*8)+(4*4)+(3*1)+(2*1)+(1*9)=134
134 % 10 = 4
So 127841-19-4 is a valid CAS Registry Number.

127841-19-4Relevant articles and documents

A new approach to the synthesis of 2-substituted indoles: Reaction of dimetallated ortho-trimethylsilylmethylanilides with esters

Bartoli, Giuseppe,Palmieri, Gianni,Petrini, Marino

, p. 1379 - 1384 (2007/10/02)

The reaction of 2-trimethylsilylmethylanilides and esters in basic medium provides a new general method for the synthesis of indoles. The advantages of this method are the mild reaction conditions (-10-0°C), the ready availability of the starting materials and the use of a non-nucleophilic base (lithium 2,2,6,6-tetramethylpiperidide) to promote cyclisation.

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