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40931-14-4

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40931-14-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40931-14-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,9,3 and 1 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 40931-14:
(7*4)+(6*0)+(5*9)+(4*3)+(3*1)+(2*1)+(1*4)=94
94 % 10 = 4
So 40931-14-4 is a valid CAS Registry Number.

40931-14-4Relevant articles and documents

Concise syntheses and biological activities of ganomycin I and fornicin A

Yajima, Arata,Urao, Shota,Katsuta, Ryo,Nukada, Tomoo

, p. 731 - 738 (2014/03/21)

The first enantioselective syntheses of ganomycin I, a meroterpenoid isolated from the Vietnamese mushroom Ganoderma colossum, and the related meroterpenoid fornicin A were accomplished. Our methodology for the total syntheses of these compounds featured the construction of the butenolide moiety by asymmetric dihydroxylation followed by Julia-Kocienski type olefin formation and ring-closing metathesis reactions. The absolute configurations of the two natural products were determined by comparisons of specific rotation. A cell-based assay of the synthetic compounds with transfected human embryonic kidney 293 tetoff (E-PR293) cells indicated that ganomycin I possesses cytotoxicity and fornicin A possesses weak anti-HIV-1 protease activity without cytotoxicity.

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