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290333-11-8

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290333-11-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 290333-11-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,0,3,3 and 3 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 290333-11:
(8*2)+(7*9)+(6*0)+(5*3)+(4*3)+(3*3)+(2*1)+(1*1)=118
118 % 10 = 8
So 290333-11-8 is a valid CAS Registry Number.

290333-11-8Relevant articles and documents

Rapid synthesis of diversely functionalized 3,4,7-trisubstituted indoles

Grant, Seth W.,Gallagher, Timothy F.,Bobko, Mark A.,Duquenne, Celine,Axten, Jeffrey M.

scheme or table, p. 3376 - 3378 (2011/06/28)

Synthetic approaches are described for the synthesis of 4-alkoxyindole-7-carboxamides and 4-alkoxy-3-cyanoindole-7-carboxamides, which are useful intermediates in medicinal chemistry research. Two strategies were employed, highlighted by a Bartoli indole synthesis or a sequential and regioselective use of chlorosulfonyl isocyanate to install both the 3-cyano and 7-carboxamido groups. These routes are scalable and afford diversely functionalized indoles for further elaboration.

Synthetic studies towards the 2-aminopyrimidine alkaloids variolins and meridianins from marine origin

Fresneda, Pilar M.,Molina, Pedro,Delgado, Santiago,Bleda, Juan A.

, p. 4777 - 4780 (2007/10/03)

A nine-step synthesis of 9-amino-4-methoxypyrido[3',2':4,5]pyrrolo[1,2- c]pyrimidine, a tricyclic ring system present in the marine alkaloids variolins is described. The natural marine products meridianins C-E have been synthesized for the first time starting from N-protected 3-acylindoles. (C) 2000 Elsevier Science Ltd.

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