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102538-26-1

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102538-26-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 102538-26-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,2,5,3 and 8 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 102538-26:
(8*1)+(7*0)+(6*2)+(5*5)+(4*3)+(3*8)+(2*2)+(1*6)=91
91 % 10 = 1
So 102538-26-1 is a valid CAS Registry Number.

102538-26-1Relevant articles and documents

A Highly Convergent Total Synthesis of (+)-Compactin

Keck, Gary E.,Kachensky, David F.

, p. 2487 - 2493 (2007/10/02)

An intramolecular Diels-Alder approach to the construction of (+)-compactin is described.Alkylation of the lithium enolate of (acetylmethylene)triphenylphosphorane with the tosylate of allenic alcohol 15 affords phosphorane 16, which condenses with aldehyde 6 (prepared from tri-O-acetyl-D-glucal) to afford enone 3.Intramolecular Diels-Alder reaction, reduction with lithium tri-sec-butylborohydride, and acylation with (S)-(+)-2-methylbutyric anhydride yields a chromatographically separable mixture of diastereomers; conversion to compactin was accomplished by acid hydrolysis followed by oxidation.

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