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400737-33-9

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400737-33-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 400737-33-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,0,7,3 and 7 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 400737-33:
(8*4)+(7*0)+(6*0)+(5*7)+(4*3)+(3*7)+(2*3)+(1*3)=109
109 % 10 = 9
So 400737-33-9 is a valid CAS Registry Number.

400737-33-9Relevant articles and documents

Total Synthesis of Apoptolidin: Construction of Enantiomerically Pure Fragments

Nicolaou,Fylaktakidou, Konstantina C.,Monenschein, Holger,Li, Yiwei,Weyershausen, Bernd,Mitchell, Helen J.,Wei, Heng-Xu,Guntupalli, Prasuna,Hepworth, David,Sugita, Kazuyuki

, p. 15433 - 15442 (2007/10/03)

A general strategy for the total synthesis of the antitumor agent apoptolidin (1) is proposed, and the chemical synthesis of the defined key building blocks (4, 5, 6, 8, and 9) in their enantiomerically pure forms is described. The projected total synthes

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