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889868-60-4

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889868-60-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 889868-60-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,9,8,6 and 8 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 889868-60:
(8*8)+(7*8)+(6*9)+(5*8)+(4*6)+(3*8)+(2*6)+(1*0)=274
274 % 10 = 4
So 889868-60-4 is a valid CAS Registry Number.

889868-60-4Relevant articles and documents

Sequential alkylation/cyclization/isomerization of ethyl 3-(o-trifluoroacetamidoaryl)-1-propargylic esters: A new route to 2-acyl- and 2-ethoxycarbonyl-3-alkenyl indoles

Ambrogio, Ilaria,Arcadi, Antonio,Cacchi, Sandro,Fabrizi, Giancarlo,Goggiamani, Antonella,Marinelli, Fabio

, p. 9494 - 9498 (2013/10/08)

The reaction of ethyl 3-(o-trifluoroacetamidoaryl)-1-propargylic esters with ethyl iodoacetate or α-bromoacetophenone in the presence of K 2CO3 in DMSO provides a new simple access to 2-acyl- and 2-ethoxycarbonyl-3-alkenyl indoles.

2-Alkylindoles via palladium-catalyzed reductive cyclization of ethyl 3-(o-trifluoroacetamidophenyl)-1-propargyl carbonates

Ambrogio, Ilaria,Cacchi, Sandro,Fabrizi, Giancarlo

, p. 7721 - 7725 (2008/03/30)

The reaction of ethyl 3-(o-trifluoroacetamidophenyl)-1-propargyl carbonates with formate anions in the presence of Pd(PPh3)4 affords 2-alkylindoles in good to excellent yields.

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