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137174-05-1

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137174-05-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137174-05-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,1,7 and 4 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 137174-05:
(8*1)+(7*3)+(6*7)+(5*1)+(4*7)+(3*4)+(2*0)+(1*5)=121
121 % 10 = 1
So 137174-05-1 is a valid CAS Registry Number.

137174-05-1Relevant articles and documents

A highly stereoselective divergent synthesis of bicyclic models of photoreactive sesquiterpene lactones

Fuchs, Sebastien,Berl, Valerie,Lepoittevin, Jean-Pierre

, p. 1145 - 1152 (2008/02/06)

Sesquiterpene lactones are natural stereochemically pure compounds, which show a number of biological activities. In order to study the reactivity of sesquiterpene lactones in biological systems, we describe herein the asymmetric synthesis of a simple mod

Synthesis of enantiomerically pure (-)-wine lactone based on a palladium-catalyzed enantioselective allylic substitution

Bergner,Helmchen, Guenter

, p. 419 - 423 (2007/10/03)

The first enantioselective synthesis of enantiomerically pure (-)-wine lactone, (-)-1a, a fragrance constituent of various white wines, and its epimer (+)-1b, was carried out. The key steps are allylic substitution of (±)-2-cyclohexen-1-yl acetate (2) wit

Enantiocomplementary resolution of 2-phenylthio-2-cyclopentenol and 2-phenylthio-2-cyclohexenol using the same lipase

Takano,Yamada,Iida,Ogasawara

, p. 592 - 596 (2007/10/02)

Both racemic 2-phenylthio-2-cyclopentenol (±)-(3a) and 2-phenylthio-2-cyclohexenol (±)-(3b) afford the corresponding (R)-acetates (R)-4a,b and the unreacted (S)-alcohols (S)-3a,b, respectively, in excellent optical and chemical yields on treatment with vi

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