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BioReagent,生物染色剂,用于显微镜,适用于荧光分析 级 提供 ≥98% 纯度,适用于对基线干扰要求严格的色谱和分析工作流程。
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在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
3,6‑二乙酰氧基邻苯二甲腈是一种荧光探针,可通过流式细胞术检测活细胞内 pH 值。该探针可快速穿透细胞膜,经胞质酯酶水解切割,生成荧光 pH 指示剂 2,3‑二氰基‑对苯二酚(DCH),该指示剂可被紫外光激发。在钾盐缓冲体系下,DCH 激发波长为 351 nm,发射波长随 pH 变化,范围 450‑476 nm(pH 5.0‑10.0)。
实验操作流程
3,6‑二乙酰氧基邻苯二甲腈为结晶固体。可将 3,6‑二乙酰氧基邻苯二甲腈溶于所选溶剂配制储备液,所用溶剂需通入惰性气体保护。3,6‑二乙酰氧基邻苯二甲腈可溶于二甲基亚砜(DMSO)、二甲基甲酰胺等有机溶剂;在上述溶剂中的溶解度约为 30 mg/ml。
3,6‑二乙酰氧基邻苯二甲腈在水性缓冲液中微溶。若要在水性缓冲液中获得最大溶解度,应先将本品溶于 DMSO,再用选定的水性缓冲液进行稀释。采用该方法,本品在 DMSO:PBS(pH 7.2)=1:1 体系中溶解度约为 0.5 mg/ml。不建议将水溶液储存超过 1 天。
3,6‑diacetoxy Phthalonitrile is a fluorescent probe for monitoring intracellular pH by flow cytometry in living cells. It rapidly crosses cell membranes and is cleaved by cytosolic esterases to form the fluorescent pH indicator 2,3‑dicyano‑hydroquinone (DCH), which is excited at UV wavelengths. DCH can be excited at 351 nm, with pH‑dependent emission in the range of 450‑476 nm (pH 5.0‑10.0) using a potassium‑based buffer.
Laboratory Procedures
3,6‑diacetoxy Phthalonitrile is supplied as a crystalline solid. A stock solution may be made by dissolving the 3,6‑diacetoxy phthalonitrile in the solvent of choice, which should be purged with an inert gas. 3,6‑diacetoxy Phthalonitrile is soluble in organic solvents such as DMSO and dimethyl formamide. The solubility of 3,6‑diacetoxy phthalonitrile in these solvents is approximately 30 mg/ml.
3,6‑diacetoxy Phthalonitrile is sparingly soluble in aqueous buffers. For maximum solubility in aqueous buffers, 3,6‑diacetoxy phthalonitrile should first be dissolved in DMSO and then diluted with the aqueous buffer of choice. 3,6‑diacetoxy Phthalonitrile has a solubility of approximately 0.5 mg/ml in a 1:1 solution of DMSO:PBS (pH 7.2) using this method. We do not recommend storing the aqueous solution for more than one day.
| Excitation and Emision Ranges | λex 330 nm, λem 445 nm in 0.1 M Tris pH 8.0 (esterase) |
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