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194355-09-4

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194355-09-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 194355-09-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,4,3,5 and 5 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 194355-09:
(8*1)+(7*9)+(6*4)+(5*3)+(4*5)+(3*5)+(2*0)+(1*9)=154
154 % 10 = 4
So 194355-09-4 is a valid CAS Registry Number.

194355-09-4Relevant articles and documents

Stereoselective Syntheses of (+)-Goniotriol, (+)-8-Acetylgoniotriol, (+)-Goniodiol, (+)-9-Deoxygoniopypyrone, (+)-Altholactone, and (-)-Goniofupyrone

Mukai, Chisato,Hirai, Syuichi,Hanaoka, Miyoji

, p. 6619 - 6626 (2007/10/03)

The γ-lactone intermediate (-)-7, derived from (+)-tricarbonyl(η6-o-(trimethylsilyl)benzaldehyde)chromium(0) complex, was efficiently converted into the corresponding δ-lactone intermediate (-)-11. This second intermediate has been shown to be a versatile compound for stereoselective syntheses of natural styryllactones possessing a six-membered lactone moiety, isolated from Goniothalamus giganteus, by transforming it into (+)-goniotriol, (+)-8-acetylgoniotriol, (+)-goniodiol, (+)-9-deoxygoniopypyrone, (+)-altholactone, and (-)-goniofupyrone.

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