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(S)-1-((S)-3-Benzyloxycarbonylamino-2-tert-butoxycarbonylamino-propionyl)-pyrrolidine-2-carboxylic acid 2-trimethylsilanyl-ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

176755-22-9

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176755-22-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 176755-22-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,6,7,5 and 5 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 176755-22:
(8*1)+(7*7)+(6*6)+(5*7)+(4*5)+(3*5)+(2*2)+(1*2)=169
169 % 10 = 9
So 176755-22-9 is a valid CAS Registry Number.

176755-22-9Relevant academic research and scientific papers

A new synthesis of cyclotheonamide B via guanidination of ornithine

Deng, Jingen,Hamada, Yasumasa,Shioiri, Takayuki

, p. 2261 - 2264 (2007/10/03)

A macrocyclic thrombin inhibitor, cyclotheonamide B (1, R = Ac) was synthesized via a new approach: guanidination of the ornithine-containing macrocyclic peptide (2). In comparison of various coupling reagents, pentafluorophenyl diphenylphosphinate (FDPP) gave the macrocyclic peptide (2) in good yield, and the configuration of the amino acid residue has been revealed to be important for the macrolactamization.

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