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CAS RN: 756526-03-1 | 產品號碼: B3728
| 產品號碼 | B3728 |
| 分子式 / 分子量 | C__2__2H__3__2N__2O__1__3 = 532.50 |
| 外觀與形狀（20°C） | Liquid |
| 儲存條件 | Frozen (<0°C) |
| 儲存在惰性氣體下 | Store under inert gas |
| 應避免的情況 | Moisture Sensitive,Heat Sensitive |
| CAS RN | 756526-03-1 |
| PubChem Substance ID | 172089011 |
產品規格
| Appearance | Colorless to Yellow clear liquid to cloudy liquid |
| Elemental analysis(Nitrogen) | 4.70 to 5.80 % |
性質
| flp | 336 °C |
GHS
相關法規
運輸資料
| HS編碼* | 2928.00-000 |
Application
TCI Practical Example: Amidation of PEG linker
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Used Chemicals
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Procedure
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To a solution of triethylamine (4.7 mL, 34.2 mmol) and benzylamine (620 µL, 5.6 mmol) in acetonitrile (39 mL) was added bis(NHS)PEG5 (1.0 g, 1.9 mmol) dissolved in acetonitrile (39 mL) at room temperature and stirred for 17 hours. The reaction mixture was washed with brine (30 mL), and the organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The crude product was purified by silica gel chromatography (dichloromethane:methanol = 8:1) to afford bis(Bn)PEG5 (638 mg, 66% yield) as a colorless clear oil.
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Experimenter’s Comments
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The reaction solution was monitored by UPLC.
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Analytical Data
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Bis(Bn)PEG5
1H NMR (400 MHz, CDCl3); δ 8.37 (t, J = 6.0 Hz, 2H), 7.33-7.21 (m, 10H), 4.27 (d, J = 6.0 Hz, 2H), 3.63 (t, J = 6.4 Hz, 2H), 3.49 (s, 16H), 3.35 (s, 2H), 2.38 (t, J = 6.4 Hz, 4H).
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/Other Reference
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- Immunoactivity of Protein Conjugates of Carba Analogues from Neisseria meningitidis A Capsular Polysaccharide
考研文獻
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