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655245-26-4

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655245-26-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 655245-26-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,5,2,4 and 5 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 655245-26:
(8*6)+(7*5)+(6*5)+(5*2)+(4*4)+(3*5)+(2*2)+(1*6)=164
164 % 10 = 4
So 655245-26-4 is a valid CAS Registry Number.

655245-26-4Downstream Products

655245-26-4Relevant articles and documents

Total Synthesis of Macrosphelides A, B, and E: First Application of Ring-Closing Metathesis for Macrosphelide Synthesis

Kawaguchi, Takanori,Funamori, Nobutaka,Matsuya, Yuji,Nemoto, Hideo

, p. 505 - 509 (2007/10/03)

A new synthetic route for macrosphelides A, B, and E based on ring-closing metathesis (RCM) was established. The substrates for RCM could be synthesized starting from commercially available chiral materials, methyl (S)-lactate and methyl (S)- or (R)-3-hydroxybutyrate, in good overall yields. In the investigation of the key RCM step, it was found that the steric factor around the reaction site significantly affected the reaction rate of macrocyclization. A detailed account regarding this synthetic study is described herein.

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