Fmoc-Orn(Boc)-OHCAS# 109425-55-0 |
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Quality Control & MSDS
Number of papers citing our products
Chemical structure
3D structure
| Cas No. | 109425-55-0 | SDF | Download SDF |
| PubChem ID | 2756114 | Appearance | Powder |
| Formula | C25H30N2O6 | M.Wt | 454.5 |
| Type of Compound | N/A | Storage | Desiccate at -20°C |
| Solubility | Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc. | ||
| Chemical Name | (2S)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-5-[(2-methylpropan-2-yl)oxycarbonylamino]pentanoic acid | ||
| SMILES | CC(C)(C)OC(=O)NCCCC(C(=O)O)NC(=O)OCC1C2=CC=CC=C2C3=CC=CC=C13 | ||
| Standard InChIKey | JOOIZTMAHNLNHE-NRFANRHFSA-N | ||
| Standard InChI | InChI=1S/C25H30N2O6/c1-25(2,3)33-23(30)26-14-8-13-21(22(28)29)27-24(31)32-15-20-18-11-6-4-9-16(18)17-10-5-7-12-19(17)20/h4-7,9-12,20-21H,8,13-15H2,1-3H3,(H,26,30)(H,27,31)(H,28,29)/t21-/m0/s1 | ||
| General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months. We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months. Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it. |
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| About Packaging | 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial. 2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial. 3. Try to avoid loss or contamination during the experiment. |
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| Shipping Condition | Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request. | ||
Fmoc-Orn(Boc)-OH Dilution Calculator
Fmoc-Orn(Boc)-OH Molarity Calculator
| 1 mg | 5 mg | 10 mg | 20 mg | 25 mg | |
| 1 mM | 2.2002 mL | 11.0011 mL | 22.0022 mL | 44.0044 mL | 55.0055 mL |
| 5 mM | 0.44 mL | 2.2002 mL | 4.4004 mL | 8.8009 mL | 11.0011 mL |
| 10 mM | 0.22 mL | 1.1001 mL | 2.2002 mL | 4.4004 mL | 5.5006 mL |
| 50 mM | 0.044 mL | 0.22 mL | 0.44 mL | 0.8801 mL | 1.1001 mL |
| 100 mM | 0.022 mL | 0.11 mL | 0.22 mL | 0.44 mL | 0.5501 mL |
| * Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations. | |||||
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An unnatural amino acid that induces beta-sheet folding and interaction in peptides.[Pubmed:11982357]
J Am Chem Soc. 2002 May 8;124(18):4972-3.
This paper introduces a unique amino acid that can readily be incorporated into peptides to make them fold into beta-sheetlike structures that dimerize through beta-sheet interactions. This new amino acid, Orn(i-PrCO-Hao), consists of an ornithine residue with the beta-strand-mimicking amino acid Hao [J. Am. Chem. Soc. 2000, 122, 7654-7661] attached to its side chain. When Orn(i-PrCO-Hao) is incorporated into a peptide, or appended to its N-terminus, the Hao group hydrogen bonds to the three subsequent residues to form a beta-sheetlike structure. The amino acid Orn(i-PrCO-Hao) is readily used in peptide synthesis as its Fmoc derivative, Fmoc-Orn(i-PrCO-Hao)-OH (3). Fmoc-Orn(i-PrCO-Hao)-OH behaves like a regular amino acid in peptide synthesis and was uneventfully incorporated into the peptide o-anisoyl-Val-Orn(i-PrCO-Hao)-Phe-Ile-Leu-NHMe (4) through standard automated Fmoc solid-phase peptide synthesis, with DIC and HOAt as the coupling agent for Fmoc-Orn(i-PrCO-Hao)-OH and o-anisic acid and HATU as the coupling agent for all other couplings. A second synthetic strategy was developed to facilitate the preparation of peptides with N-terminal Orn(i-PrCO-Hao) residues, which avoids the need for the preparation of Fmoc-Orn(i-PrCO-Hao)-OH. In this strategy, Boc-Orn(Fmoc)-OH is used as the penultimate amino acid in the peptide synthesis, and i-PrCO-Hao-OH (2) is used as the final amino acid. N-Terminal Orn(i-PrCO-Hao) peptide H-Orn(i-PrCO-Hao)-Phe-Ile-Leu-NHMe.TFA (5) was prepared in a fashion similar to that for 4, using DIC and HOAt as the coupling agent for i-PrCO-Hao-OH and HATU as the coupling agent for all other couplings. 1H NMR transverse-ROESY, coupling constant, and chemical shift studies establish that peptide 4 forms a dimeric beta-sheetlike structure in CDCl3 solution. The 1H NMR studies also suggest that the ornithine unit adopts a well-defined turn conformation. Analogous 1H NMR studies of peptide 5 indicate that this TFA salt folds but does not dimerize in CD3OD solution. Collectively, these synthetic and spectroscopic studies establish that the amino acid Orn(i-PrCO-Hao) induces beta-sheet structure and interactions in peptides in suitable organic solvents. Unlike the Hao amino acid, which acts as a prosthetic to replace three residues of the peptide strand, the Orn(i-PrCO-Hao) amino acid acts as a splint that helps enforce a beta-sheetlike structure without replacing the residues and their side chains. This feature of Orn(i-PrCO-Hao) is important, because it allows the creation of beta-sheet structure with minimal perturbation of the peptide sequence.
