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289667-02-3

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289667-02-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 289667-02-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,9,6,6 and 7 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 289667-02:
(8*2)+(7*8)+(6*9)+(5*6)+(4*6)+(3*7)+(2*0)+(1*2)=203
203 % 10 = 3
So 289667-02-3 is a valid CAS Registry Number.

289667-02-3Relevant articles and documents

Total synthesis of (+)-mycalamide A

Kagawa, Natsuko,Ihara, Masataka,Toyota, Masahiro

, p. 875 - 878 (2007/10/03)

A convergent total synthesis of (+)-mycalamide A is described. A Yb(OTf)3-TMSCl catalytic system is used to synthesize a trioxadecalin ring system, which contains the right segment of mycalamide A. In addition, a tetrahydropyran ring, which is

A stereoselective synthesis of the C-10 to C-18 (right-half) fragment of mycalamides employing lewis acid promoted intermolecular aldol reaction.

Toyota,Hirota,Hirano,Ihara

, p. 2031 - 2034 (2007/10/03)

[reaction: see text] Beginning with D-mannitol, a stereoselective synthesis of the right-half segment of the mycalamides has been accomplished by employing Lewis acid catalyzed intermolecular aldol reaction and oxypalladation as the key steps.

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