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(R)-(-)-ethyl 5-(tert-butyldimethylsilyloxy)-4-(3-methoxyphenyl)-4-methylent-2-enoate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

163981-38-2

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163981-38-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 163981-38-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,3,9,8 and 1 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 163981-38:
(8*1)+(7*6)+(6*3)+(5*9)+(4*8)+(3*1)+(2*3)+(1*8)=162
162 % 10 = 2
So 163981-38-2 is a valid CAS Registry Number.

163981-38-2Relevant academic research and scientific papers

Asymmetric construction of benzylic quaternary carbons from chiral malonates: Formal synthesis of natural (-)aphanorphine

Fadel,Arzel

, p. 893 - 900 (2007/10/02)

Enantiomerically pure (+)-dihydronaphthalene 4, a precursor of (-)-aphanorphine, was obtained from the homochiral malonic acid ester (R)-(+)-5, via the chiral lactone (+)-12 prepared by a Wittig-Horner reaction and hydrogenation, which underwent subsequent acidic Friede-Crafts cyclisation.

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