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(S)-4-nitrophenyl 2-((S)-2-((tert-butoxycarbonyl)amino)propanamido)propanoate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

201289-18-1

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201289-18-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 201289-18-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,2,8 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 201289-18:
(8*2)+(7*0)+(6*1)+(5*2)+(4*8)+(3*9)+(2*1)+(1*8)=101
101 % 10 = 1
So 201289-18-1 is a valid CAS Registry Number.

201289-18-1Relevant academic research and scientific papers

Facile and mild synthesis of linear and cyclic peptides via thioesters

Agrigento, Paola,Albericio, Fernando,Chamoin, Sylvie,Dacquignies, Isabelle,Koc, Halil,Eberle, Martin

supporting information, p. 3922 - 3925 (2014/08/18)

Thioester-mediated peptide bond formation has recently garnered a lot of attention, most notably in its relevance to condensation of large peptide fragments. Herein, a simple and general ligation method for the preparation of linear and cyclic peptides, starting from peptide thioester, mainly p-chlorophenyl, precursors is reported. The inherent advantages of this method are the low epimerization, reduced dimerization, use of mild reaction conditions, and elimination of superfluous coupling reagents.

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