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308359-27-5

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308359-27-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 308359-27-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,8,3,5 and 9 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 308359-27:
(8*3)+(7*0)+(6*8)+(5*3)+(4*5)+(3*9)+(2*2)+(1*7)=145
145 % 10 = 5
So 308359-27-5 is a valid CAS Registry Number.

308359-27-5Relevant articles and documents

Synthesis of ecteinascidin ET-743 and phthalascidin Pt-650 from cyanosafracin B

Cuevas, Carmen,Perez, Marta,Martin, Maria J.,Chicharro, Jose L.,Fernandez-Rivas, Carolina,Flores, Maria,Francesch, Andres,Gallego, Pilar,Zarzuelo, Maria,De La Calle, Fernando,Garcia, Jesus,Polanco, Concepcion,Rodriguez, Ignacio,Manzanares, Ignacio

, p. 2545 - 2548 (2007/10/03)

(equation presented) An efficient new process is described for the synthesis of ecteinascidin ET-743 (1) and phthalascidin (2), starting from readily available cyanosafracin B (3).

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