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202390-84-9

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202390-84-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 202390-84-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,2,3,9 and 0 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 202390-84:
(8*2)+(7*0)+(6*2)+(5*3)+(4*9)+(3*0)+(2*8)+(1*4)=99
99 % 10 = 9
So 202390-84-9 is a valid CAS Registry Number.

202390-84-9Relevant articles and documents

The design and synthesis of guanosine compounds with in vitro activity against the colon cancer cell line SW480: Non-taxane derived mimics of taxol?

Howarth, Joshua,Kenny, Padraic,McDonnell, Susan,O'Connor, Aine

, p. 2693 - 2697 (2007/10/03)

In the course of our investigation into the use of taxol as a lead compound to design new molecules with anti-cancer activity, we have synthesized four compounds based on protected guanosine coupled to taxol isoserine side-chain analogues. These analogues show in vitro anti-cancer activity against the colon cancer cell line SW480 that their constituent parts do not.

Total asymmetric synthesis of taxol by dehydration condensation between 7-TES baccatin III and protected N-benzoylphenylisoserines prepared by enantioselective aldol reaction

Shiina, Isamu,Saitoh, Katsuyuki,Frechard-Ortuno, Isabelle,Mukaiyama, Teruaki

, p. 3 - 4 (2007/10/03)

Total asymmetric synthesis of Taxol was completed by dehydration condensation between a protected N-benzoylphenylisoserine 4 or 9 and 7-TES baccatin in which was prepared from 8-membered ring enone. Taxol side chains 4, 7, 9 and 11, optically active protected N-benzoylphenylisoserines, were successfully synthesized by enantioselective aldol reaction from two achiral starting materials, benzaldehyde and an enol silyl ether derived from S-ethyl benzyloxyethanethioate.

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