- S-trityl-L-Cysteine
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- $81.00 / 500mg
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2026-03-26
- CAS:2799-07-7
- Min. Order:
- Purity: 97.08%
- Supply Ability: 10g
- (+)-S-Trityl-L-cysteine 97%
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- $15.00 / 1KG
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2021-07-02
- CAS:2799-07-7
- Min. Order: 1KG
- Purity: 99%+ HPLC
- Supply Ability: Monthly supply of 1 ton
- S-Trityl-L-cysteine
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- $1.00 / 1KG
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2019-07-06
- CAS:2799-07-7
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: 20kg
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| | S-Trityl-L-cysteine Basic information |
| | S-Trityl-L-cysteine Chemical Properties |
| Melting point | 182-183 °C (dec.)(lit.) | | Boiling point | 524.7±50.0 °C(Predicted) | | density | 1.1342 (rough estimate) | | refractive index | 111 ° (C=0.8, 0.04mol Ethanolic HCl) | | storage temp. | Sealed in dry,Room Temperature | | solubility | Soluble in DMSO (up to 20 mg/ml). | | pka | 2.22±0.10(Predicted) | | form | White to off-white solid. | | color | White or off-white | | Optical Rotation | [α]25/D +115°, c = 0.8 in 0.04 M ethanolic HCl | | BRN | 2339626 | | Stability: | Stable for 2 years from date of purchase as supplied. Solutions in DMSO may be stored at -20°C for up to 1 week. | | Major Application | peptide synthesis | | InChI | InChI=1S/C22H21NO2S/c23-20(21(24)25)16-26-22(17-10-4-1-5-11-17,18-12-6-2-7-13-18)19-14-8-3-9-15-19/h1-15,20H,16,23H2,(H,24,25)/t20-/m0/s1 | | InChIKey | DLMYFMLKORXJPO-FQEVSTJZSA-N | | SMILES | C(O)(=O)[C@H](CSC(C1=CC=CC=C1)(C1=CC=CC=C1)C1=CC=CC=C1)N | | CAS DataBase Reference | 2799-07-7(CAS DataBase Reference) |
| Hazard Codes | Xn | | Risk Statements | 22 | | Safety Statements | 22-24/25 | | WGK Germany | 3 | | RTECS | AY7710000 | | HS Code | 29309090 | | Storage Class | 11 - Combustible Solids | | Hazard Classifications | Acute Tox. 4 Oral | | Toxicity | dog,LDLo,intravenous,150mg/kg (150mg/kg),GASTROINTESTINAL: NAUSEA OR VOMITINGGASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA"BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY),National Technical Information Service. Vol. PB81-109993, |
| | S-Trityl-L-cysteine Usage And Synthesis |
| Description | S-Trityl-cysteine (2799-07-7) is a cell permeable inhibitor of mitotic kinesin Eg5 (IC50 for inhibition of basal ATPase activity = 1 μM; IC50 for inhibition of microtubule-activated ATPase activity = 140 nM). Mean growth concentration (GI50) of 1.31 μM for a panel of 60 different tumor cell lines. | | Chemical Properties | almost white to light yellow granular powder | | Uses | A protected cysteine for peptide synthesis. S-Trityl-L-cysteine (STLC) is a tight-binding inhibitor of Eg5 that prevents mitotic progression. It has proven antitumor activity as shown in the NCI 60 tumor cell line screen. | | Uses | (+)-S-Trityl-L-cysteine, a non-natural, sulfur-containing amino acid is commonly used as a reagent in solution phase peptide synthesis (SPPS). It is also used as a metal-binding agent to synthesize substituted ferrocenoyl peptide conjugates using HBTU peptide coupling reagent for the cation-sensing applications solution via peptide-metal interactions. | | Definition | ChEBI: (2R)-2-amino-3-[(triphenylmethyl)thio]propanoic acid is a benzenoid aromatic compound. | | reaction suitability | reaction type: solution phase peptide synthesis | | Biological Activity | Potent, cell-permeable, selective inhibitor of mitotic kinesin Eg5, a protein required for establishing and maintaining a bipolar spindle. Inhibits basal ATPase activity (IC 50 = 1 mM) and microtubule-activated ATPase activity of Eg5 (IC 50 = 140 nM). Induces mitotic arrest in HeLa cells with an IC 50 of 700 nM. Displays antitumor activity. | | Synthesis | Triphenylmethanol (3.3 g, 12.7 mmol) and L-cysteine hydrochloride (2 g, 12.7 mmol) were reacted in 25 mL of trifluoroacetic acid (TFA). The mixture was stirred at room temperature for 2 hours. Upon completion of the reaction, the mixture was cooled to 0 °C, followed by the slow addition of 4 N sodium hydroxide solution and ether (40 mL) to adjust the pH to 4-5. Next, 10% aqueous sodium acetate was added to further adjust the pH to 5-6. The precipitate precipitated from the reaction mixture was collected by filtration, washed with fresh ether, and dried to afford S-trityl-L-cysteine (5 g, 98% yield). The structure of the product was confirmed by 1H NMR (DMSO-d6): δ 2.35-2.61 (m, 2H, CH2), 2.85-2.98 (m, 1H, CH), 7.2-7.45 (m, 15H, triphenylmethyl-L-H).MALDI-TOF MS analysis showed m/z 364.7 [M + H]+, which is in agreement with the theoretical C22H21NO2S molecular weight (363.47). | | storage | Store at +4°C | | References | [1] S. DEBONIS. In vitro screening for inhibitors of the human mitotic kinesin Eg5 with antimitotic and antitumor activities.[J]. Molecular Cancer Therapeutics, 2004, 3 9 1: 1079-1090. DOI:10.1158/1535-7163.1079.3.9
[2] SÉBASTIEN BRIER. Identification of the Protein Binding Region of S-Trityl-l-cysteine, a New Potent Inhibitor of the Mitotic Kinesin Eg5†[J]. Biochemistry Biochemistry, 2004, 43 41: 13072-13082. DOI:10.1021/bi049264e
[3] DIMITRIOS A SKOUFIAS. S-trityl-L-cysteine is a reversible, tight binding inhibitor of the human kinesin Eg5 that specifically blocks mitotic progression.[J]. The Journal of Biological Chemistry, 2006, 281 26: 17559-17569. DOI:10.1074/jbc.m511735200 |
| | S-Trityl-L-cysteine Preparation Products And Raw materials |
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