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103954-23-0

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103954-23-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 103954-23-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,9,5 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 103954-23:
(8*1)+(7*0)+(6*3)+(5*9)+(4*5)+(3*4)+(2*2)+(1*3)=110
110 % 10 = 0
So 103954-23-0 is a valid CAS Registry Number.

103954-23-0Downstream Products

103954-23-0Relevant articles and documents

A General Stereocontrolled Synthesis of Opines through Asymmetric Pd-Catalyzed N-Allylation of Amino Acid Esters

Albat, Dominik,Neud?rfl, J?rg-Martin,Schmalz, Hans-Günther

, p. 2099 - 2102 (2021)

A stereo-divergent synthesis of natural and unnatural opines in stereochemically pure form is based on the direct palladium-catalyzed N-allylation of α-amino acid esters (up to 97 % ee or 99 : 1 d.r.) using methyl (E)-2-penten-4-yl carbonate in the presence of only 1 mol% of a catalyst, prepared in-situ from the C2-symmetric diphosphine iPr-MediPhos and [Pd(allyl)Cl]2. Selected target compounds (incl. a derivative of the drug enalapril) were efficiently obtained from the N-allylated intermediates by oxidative cleavage (ozonolysis) of the allylic C=C bond under temporary N-Boc-protection.

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