EDANS-O-NH2 | 1398101-04-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 萘
• 英文名称: EDANS-O-NH2
• CAS: 1398101-04-6
• 化学式: C₂HF₃O₂*C₁₄H₁₆N₃O₅S*Na
• 分子量: 475.378
• InChiKey: NTTTWWSKGKNLEK-UHFFFAOYSA-M

反应信息

• 作为产物：
  描述：

  、 三氟乙酸 以 二氯甲烷 为溶剂， 反应 2.0h， 以276 mg的产率得到EDANS-O-NH2
  参考文献：
  名称：

  Regioselective fluorescent labeling of N,N,N-trimethyl chitosan via oxime formation

  摘要：

  Fluorescent labeling of chitosan and its derivatives is widely used for in vitro visualization and is accomplished by random introduction of the fluorophore to the polymer backbone, conceivably altering the bioactivity of the polymer. Here, we report for the first time the regioselective conjugation of a fluorophore to the reducing end of a fully N,N,N-trimethylated chitosan (TMC) by oxime formation. End-labeled conjugation of 5-(2-((aminooxyacetyl)amino)ethylamino)naphthalene-1-sulfonic acid (EDANS-O-NH2) fluorophore to TMC to form TMC-oxime-EDANS (f-TMC) was confirmed by H-1 NMR and fluorescence spectroscopy. Average molecular weight calculations of f-TMC with H-1 NMR and fluorescence spectroscopy gave similar results or similar to 7.7 kDa. f-TMC in human bronchial epithelial cells was both cell membrane bound as well as intracellularly localized. This demonstrates the proof-of-concept for selective oxime formation at the reducing end of a chitosan derivative, which can be used for tracking chitosan in gene and drug delivery purposes and gives rise to further modifications with other functional groups. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carbpol.2012.06.070