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2-Pentenoic acid, 4-[[(1,1-dimethylethyl)diphenylsilyl]oxy]-, ethyl ester, (2E,4S)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

203387-35-3

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203387-35-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 203387-35-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,3,8 and 7 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 203387-35:
(8*2)+(7*0)+(6*3)+(5*3)+(4*8)+(3*7)+(2*3)+(1*5)=113
113 % 10 = 3
So 203387-35-3 is a valid CAS Registry Number.

203387-35-3Relevant academic research and scientific papers

Stereoselective synthesis of marine macrolide Aspergillide D

Talakokkula, Anil,Baikadi, Karunakar,Venkat Narsaiah

, (2019/08/08)

A formal stereoselective synthesis of the naturally occurring 16-membered macrolide aspergillide D is described. The origins of the chiral centers are ribose, lactic acid and the Sharpless asymmetric epoxidation protocol. The foremost reactions involved a

Total Synthesis of the Boron-Containing Ion Carrier Antibiotic Macrodiolide Tartrolon B

Mulzer, Johann,Berger, Markus

, p. 891 - 898 (2007/10/03)

The first total synthesis of the boron-containing macrodiolide antibiotic tartrolon B is reported in full detail. Two convergent approaches to the target compound are described, the first of which eventually failed, due to sensitive functionality. In the

Enantioselective synthesis of the carbocyclic moiety of (-)-carbovir

Roulland, Emmanuel,Monneret, Claude,Florent, Jean-Claude

, p. 4125 - 4128 (2007/10/03)

Enantioselective construction of the protected carbocycle moiety of the anti-HIV drug carbovir was achieved in 11 steps from (S)-(-)-ethyl lactate. The two key steps are a Claisen [3+3] sigmatropic rearrangement of (3S,4E)-3-(4-methoxy-phenoxymethyl)-hex-

Studies directed towards the total synthesis of the antibiotic macrodiolide tartrolon: EPC synthesis of the protected seco acid

Mulzer, Johann,Berger, Markus

, p. 803 - 806 (2007/10/03)

An efficient synthesis of the protected seco acid 2 of the antibiotic macrodiolide tartrolon 1 is described. Key steps are a substrate controlled aldol-reaction, a Johnson-Claisen rearrangement, and a Horner-Wadsworth-Emmons olefination with subsequent Co

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