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341998-54-7

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341998-54-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 341998-54-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,1,9,9 and 8 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 341998-54:
(8*3)+(7*4)+(6*1)+(5*9)+(4*9)+(3*8)+(2*5)+(1*4)=177
177 % 10 = 7
So 341998-54-7 is a valid CAS Registry Number.

341998-54-7Relevant articles and documents

Synthesis of the indole alkaloids meridianins from the tunicate Aplidium meridianum

Fresneda, Pilar M,Molina, Pedro,Bleda, Juan A

, p. 2355 - 2363 (2001)

The marine natural products meridianins A and C-E have been synthesized for the first time starting from the appropriate N-tosyl-3-acetylindole. A facile two-step conversion of N-tosyl-3-acetylindoles to the corresponding meridianins by treatment with dimethylformamide dimethylacetal and further cyclization of the resulting enaminone with aminoguanidine is described. This method has also been applied for the preparation of the 3-[(2-amino)pyrimidin-4-yl]-7-azaindole.

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