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73541-95-4

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73541-95-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 73541-95-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,5,4 and 1 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 73541-95:
(7*7)+(6*3)+(5*5)+(4*4)+(3*1)+(2*9)+(1*5)=134
134 % 10 = 4
So 73541-95-4 is a valid CAS Registry Number.

73541-95-4Relevant articles and documents

Preparation of lactones

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, (2008/06/13)

7-Substituted lower alkyl hept-6-enoates and 4-hydroxytetrahydropyran-2-ones bearing 6-olefinic substituents (e.g.,) ethyl erythro-3,5-dihydroxy-7-phenyl-hept-6-enoates are prepared by a multi-step process. The process involves 3-protected-lower alkyl 3,5

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.

Synthetic and biological studies of compactin and related compounds. 2 Synthesis of the lactone moiety of compactin

Rosen,Taschner,Heathcock

, p. 3994 - 4003 (2007/10/02)

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