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207402-09-3

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207402-09-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 207402-09-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,7,4,0 and 2 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 207402-09:
(8*2)+(7*0)+(6*7)+(5*4)+(4*0)+(3*2)+(2*0)+(1*9)=93
93 % 10 = 3
So 207402-09-3 is a valid CAS Registry Number.

207402-09-3Relevant articles and documents

Total synthesis of mycophenolic acid

Covarrubias-Zú?iga, Adrián,Gonzalez-Lucas, Armando,Domínguez, Mireya M.

, p. 1989 - 1994 (2007/10/03)

A convergent total synthesis of the natural compound mycophenolic acid 1 is described. The synthetic strategy for the construction of the hexasubstituted aromatic nucleus was based on a ring annulation sequence, involving a Michael addition reaction and intramolecular Dieckmann condensation reaction in situ as the key step. Subsequent transformations of the substituents afforded the target mycophenolic acid 1.

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