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109240-67-7

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109240-67-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109240-67-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,2,4 and 0 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 109240-67:
(8*1)+(7*0)+(6*9)+(5*2)+(4*4)+(3*0)+(2*6)+(1*7)=107
107 % 10 = 7
So 109240-67-7 is a valid CAS Registry Number.

109240-67-7Relevant articles and documents

5-Methyl-4H-1,3-dioxins, new chiral building blocks: Transformation into (R)- and (S)-4-hydroxymethyl-4-methyl-1,3-dioxolanes via oxidation and rearrangement and determination of the absolute configuration

Flock, Susanne,Frauenrath, Herbert,Wattenbach, Carsten

, p. 3394 - 3399 (2005)

5-Methyl-4H-1,3-dioxins obtained by asymmetric double-bond isomerization have been transformed into 4-hydroxymethyl-4-methyl-1,3-dioxolanes by m-chloroperbenzoic acid oxidation, ring contraction and reduction. The stereochemical course of this transformat

Enantioselective syntheses of the proposed structures of cytotoxic macrolides iriomoteolide-1a and -1b

Ghosh, Arun K.,Yuan, Hao

supporting information; experimental part, p. 3120 - 3123 (2010/09/16)

(Figure Presented) Enantioselective total syntheses of the proposed structures of macrolide cytotoxic agents iriomoteolide-1a and -1b have been accomplished. The synthesis was carried out in a convergent and stereoselective manner. However, the present wo

Chemo-enzymatic enantioconvergent synthesis of C4-building blocks containing a fully substituted chiral carbon center using bacterial epoxide hydrolases

Steinreiber,Hellstr?m,Mayer,Orru,Faber

, p. 111 - 113 (2007/10/03)

A highly efficient chemo-enzymatic asymmetric synthesis of chiral C4-building blocks containing a fully substituted carbon center is reported. The key transformation consists of a deracemization based on an enantioconvergent asymmetric hydrolys

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