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124620-56-0

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124620-56-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 124620-56-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,4,6,2 and 0 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 124620-56:
(8*1)+(7*2)+(6*4)+(5*6)+(4*2)+(3*0)+(2*5)+(1*6)=100
100 % 10 = 0
So 124620-56-0 is a valid CAS Registry Number.

124620-56-0Downstream Products

124620-56-0Relevant articles and documents

Synthesis and Siderophore Activity of Albomycin-like Peptides Derived from N5-Acetyl-N5-hydroxy-L-ornithine

Dolence, E. Kurt,Lin, Chia-En,Miller, Marvin J.,Payne, Shelley M.

, p. 956 - 968 (2007/10/02)

N5-Acetyl-N5-hydroxy-L-ornithine (1), the key constituent of several microbial siderophores, has been synthesized in 23percent yield overall from N-Cbz-L-glutamic acid 1-tert-butyl ester (6) derived from L-glutamic acid.Reduction of 6 to 7 and treatment with N-(trichloroethoxy)carbonyl>-O-benzylhydroxylamine (8), and diethyl azodicarboxylate and triphenylphosphine followed by deprotection produced the protected N5-acetyl-N5-hydroxy-L-ornithine derivatives 11 and 12 in large quantities (10-20 g).Following α-amino and α-carboxyl deprotections of 11 and 12, EEDQ mediated peptide coupling and final deprotection provided amino acid 1 and six albomycin-like peptides (20, 23, 25, 28, 35, and 36).The growth-promoting ability of each was evaluated with the siderophore biosynthesis mutant Shigella flexneri SA240 (SA 100 iucD:Tn5).These results indicate that substantial modification of the framework of peptide-based siderophores can be tolerated by microbial iron-transport systems.

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