货号:CDX-T0071-M500 | 规格:500 mg | 目录价:¥2310 |
产品详情
* 以下信息仅供参考,详情请以原厂网站为准
产品名称:
6-(p-Toluidino)-2-naphthalenesulfonic acid sodium salt
别名:
2,6-TNS Na; 2,6-(p-Toluidinyl)naphthalene-6-sulfonic acid Na salt
产品描述:
6-(p-Toluidino)-2-naphthalenesulfonic acid (TNS) is a widely recognized aminonaphthalene-based fluorescent probe characterized for its solvatochromic effect. TNS is found to be almost fluorescence silent in aqueous medium whereas shows a high quantum yield in organic solvents with a hypsochromic shift, as the polarity of the medium decreases. This property has been exploited in biological studies to probe the micellation properties of surfactants, membrane fluidity, hydrophobic surfaces on proteins, conformational changes upon ligand binding, ligand binding events, protein-surfactant interactions, multimeric protein assembly or aggregation, fibril formation and others. TNS has been used in many studies as environmentally sensitive fluorescent probe for the conformational state of proteins. TNS fluorescence enhancement upon binding to unfolded states of proteins might be due to the hydrophobic environment and reduced solvent accessibility rather than the binding ability and specific orientation of TNS in the bound state. Studies suggest that TNS forms aggregates in water whereas in non-aqueous solvents the order of aggregates is lower which might result in an enhancement of its fluorescence intensity. Further, TNS preferably interacts with basic and aromatic amino acid residues of the proteins. TNS is a well characterized fluorescent probe of protein structure that fluoresces in nonpolar environments but is quenched and red-shifted in solution. Spectral data: lambdaex 320nm; lambdaem ~440nm.
保存温度:
+20°C
运输温度:
Ambient
预期分子量:
335.35
产品形式:
solid
有效期:
Stable for at least 2 years after receipt when stored at +4°C.
产地:
瑞士
纯度:
99% (HPLC)
CAS号:
53313-85-2
分子式:
C17H14NNaO3S
溶解度:
Soluble in DMSO. Slightly soluble in water.
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