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(-)-(3S,4R,5R)-3-(3',4'5'-trimethoxybenzyl)-4-(3'',4''-methylenedioxybenzyl)-5-(1-menthyloxy)butyrolactone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

140138-39-2

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140138-39-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140138-39-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,1,3 and 8 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 140138-39:
(8*1)+(7*4)+(6*0)+(5*1)+(4*3)+(3*8)+(2*3)+(1*9)=92
92 % 10 = 2
So 140138-39-2 is a valid CAS Registry Number.

140138-39-2Relevant articles and documents

Asymmetric Synthesis of Lignans of the Dibenzylbutanediol and Tetrahydrodibenzocyclooctene Series

Pelter, Andrew,Ward, Robert S.,Jones, Martin D.,Maddocks, Peter

, p. 2631 - 2638 (2007/10/02)

Enolate anions obtained by conjugate addition to (-)-5-(1-menthyloxy)furan-2(5H)-one are quenched with benzyl bromides or iodides to yield homochiral dibenzylbutyrolactones.Desufurisation followed by lithium aluminium hydride reduction affords homochiral

Asymmetric Syntheses of Lignans of the Dibenzylbutyrolactone, Dibenzylbutanediol, Aryltetralin and Dibenzocyclooctadiene Series

Pelter, Andrew,Ward, Robert S.,Jones, D. Martin,Maddocks, Peter

, p. 239 - 242 (2007/10/02)

General procedures are outlined for the asymmetric syntheses of ligands of the dibenzylbutyrolactone, dibenzylbutanediol, aryltetralin and dibenzocyclooctadiene series, from tandem addition products derived from 4-mentyloxybutenolide.

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