Maximum quantity allowed is 999
CAS RN: 756526-03-1 | 产品编码: B3728
Bis(NHS)PEG5
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产品编码 | B3728 |
分子式/分子量 | C__2__2H__3__2N__2O__1__3 = 532.50 |
外观与形状(20°C) | 液体 |
储存温度 | 冷冻 (<0°C) |
储存在惰性气体下 | 存放于惰性气体之中 |
应避免的情况 | 湿气 (分解),加热 |
CAS RN | 756526-03-1 |
PubChem物质ID | 172089011 |
Appearance | Colorless to Yellow clear liquid to cloudy liquid |
Elemental analysis(Nitrogen) | 4.70 to 5.80 % |
闪点 | 336 °C |
新化学物质备案回执号 | B1A232215588 |
监管条件代码(*) |
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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
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