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Boc-Val-Orn(Z)-Leu-D-Phe-Pro-Val-Orn(Z)-Leu-D-Phe-Pro-OEt is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

57471-81-5

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57471-81-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57471-81-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,4,7 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 57471-81:
(7*5)+(6*7)+(5*4)+(4*7)+(3*1)+(2*8)+(1*1)=145
145 % 10 = 5
So 57471-81-5 is a valid CAS Registry Number.

57471-81-5Relevant academic research and scientific papers

ONE-POT CYCLIZATION OF A PEPTIDE BY THE USE OF (5-NITROPYRIDYL)DIPHENYL PHOSPHINATE: THE SYNTHESIS OF CYCLIC DECAPEPTIDE GRAMICIDIN S

Mukaiyama, Teruaki,Kamekawa, Kenichi,Watanabe, Yutaka

, p. 1367 - 1370 (1981)

One-pot synthesis of gramicidin S, cyclic decapeptide, was successfully achieved by treatment of the corresponding linear decapeptide with (5-nitropyridyl)diphenyl phosphinate, a new condensing reagent, in pyridine.Similarly, the phosphinic ester can be successfully employed in the Young test as well as syntheses of dipeptides.

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