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(2S)-2-benzyloxycarbonylamino-5-tert-butoxycarbonylamino-pentanethioic acid S-pyridin-4-yl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

657411-69-3

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657411-69-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 657411-69-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,7,4,1 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 657411-69:
(8*6)+(7*5)+(6*7)+(5*4)+(4*1)+(3*1)+(2*6)+(1*9)=173
173 % 10 = 3
So 657411-69-3 is a valid CAS Registry Number.

657411-69-3Relevant academic research and scientific papers

Synthesis of a hydroxyethylene isostere of the tripeptide Arg-Gly-Leu via a convergent acyl-like radical addition strategy

Jensen, Christina M.,Lindsay, Karl B.,Andreasen, Peter,Skrydstrup, Troels

, p. 7512 - 7519 (2005)

A hydroxyethylene isostere of the tripeptide Arg-Gly-Leu, representing an important fragment of a novel cyclic-peptide-based uPA inhibitor, was synthesized in few steps employing as the key step a samarium diiodide promoted coupling of either the 4-thiopy

Further studies in the acyl-type radical additions promoted by SmI 2: Mechanistic implications and stereoselective reduction of the keto-functionality

Mikkelsen, Lise M.,Jensen, Christina M.,H?j, Bettina,Blakskj?r, Peter,Skrydstrup, Troels

, p. 10541 - 10549 (2007/10/03)

Attempts were made to promote the carbonyl coupling of cyclohexanone to 4-pyridylthioesters of N-carbamate-protected amino acids with the one electron reducing agent, samarium diiodide. Such reactions proved unsuccessful due to the inability of the ketyl-

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