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222727-06-2

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222727-06-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 222727-06-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,2,7,2 and 7 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 222727-06:
(8*2)+(7*2)+(6*2)+(5*7)+(4*2)+(3*7)+(2*0)+(1*6)=112
112 % 10 = 2
So 222727-06-2 is a valid CAS Registry Number.

222727-06-2Relevant articles and documents

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 (1998)

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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