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899798-68-6

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899798-68-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 899798-68-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,9,9,7,9 and 8 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 899798-68:
(8*8)+(7*9)+(6*9)+(5*7)+(4*9)+(3*8)+(2*6)+(1*8)=296
296 % 10 = 6
So 899798-68-6 is a valid CAS Registry Number.

899798-68-6Relevant articles and documents

The total synthesis and biological properties of the cytotoxic macrolide FD-891 and its non-natural (Z)-C12 isomer

Garcia-Fortanet, Jorge,Murga, Juan,Carda, Miguel,Marco, J. Alberto,Matesanz, Ruth,Diaz, J. Fernando,Barasoain, Isabel

, p. 5060 - 5074 (2008/02/11)

A total, stereoselective synthesis of the naturally occurring, cytotoxic macrolide FD-891 and of its non-natural (Z)-C12 isomer is described. Three fragments of the main carbon chain were stereoselectively prepared by using asymmetric aldol and allylation reactions as the key steps. The molecule was then assembled by using two Julia-Kocienski olefinations to connect the three fragments and a Yamaguchi reaction to close the macrolactone ring. Some specific biological properties (cytotoxicity, binding to tubulin) have been determined for both macrolides. The E configuration of the C12-C13 olefinic bond seems to be an important feature in determining the cytotoxicity but the precise biological mechanism of the latter still remains to be cleared.

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