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(S)-2-Benzyloxycarbonylamino-4-methylsulfanyl-butyric acid benzotriazol-1-yl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

40917-43-9

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40917-43-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40917-43-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,9,1 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 40917-43:
(7*4)+(6*0)+(5*9)+(4*1)+(3*7)+(2*4)+(1*3)=109
109 % 10 = 9
So 40917-43-9 is a valid CAS Registry Number.

40917-43-9Relevant academic research and scientific papers

An improved method for the synthesis of active esters of N-protected amino acids and subsequent synthesis of dipeptides

Takeda,Ayabe,Suzuki,Konda,Harigaya

, p. 689 - 691 (2007/10/02)

4-Dimethylaminopyridine-catalyzed reaction of mixed carbonates 3 with N-protected amino acids 4 gave the corresponding active esters 5-9, from which dipeptides 11-18 were synthesized by aminolysis with amino acids 10.

A Convenient Synthesis of Peptide Using Oxallates

Takeda, Kazuyoshi,Sawada, Izumi,Suzuki, Akira,Ogura, Haruo

, p. 4451 - 4454 (2007/10/02)

The equimolar reactions of N-protected amino acids , amino acids or amino acid esters with oxallates (1a-1e) having active ester groups in the presence of pyridine in acetonitrile afforded the corresponding dipeptides via active esters in good yields.

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