5-羧基荧光素是一种通过将染料掺入细胞来研究细胞内pH变化的方法，但是当用于pKa = 7.0的细胞(如淋巴细胞)中时，染料会从细胞中洗脱出来，很难快速测定。 BCECF引入了两个羧乙基基团以减少从细胞中的洗脱。 适用于研究细胞内pH变化(λex= 490 nm，λem= 526 nm)。

　　・如果将本产品以粉末形式取出并使用，由于其性质，静电等因素，它可能会粘附在容器内部，从而难以完全取出。

・对于粘附在容器上且无法取出的粉末，请在使用前将要使用的溶剂倒入容器中并溶解。

2 mg / ml(甲醇)

1) R. A. Steinhardt and D. Mazia, “Development of K⁺-conductance and Membrane Potentials in Unfertilized Sea Urchin Eggs After Exposure to NH₄OH”, Nature, 1973, 241, 400.
2) T. J. Rink, R. Y. Tsien and T. Pozzan, “Cytoplasmic pH and Free Mg²⁺ in Lymphocytes”, J. Cell Biol., 1982, 95, 189.
3) A. M. Paradiso, R. Y. Tsien and T. E. Machen, “Na⁺ -H⁺ Exchange in Gastric Glands as Measured with a Cytoplasmic-trapped, Fluorescent pH Indicator”, Proc. Natl. Acad. Sci. USA, 1984, 81, 7436.
4) S. Grinstein, B. Elder and W. Furuya, “Phorbol Ester-induces Changes of Cytoplasmic pH in Neutrophils: Role of Exocytosis in Na⁺ – H⁺ Exchange”, Am. J. Physiol., 1985, 248, C379.
5) G. B. Zavoico, E. J. Cragoe and M. B. Feinstein, “Regulation of Intracellular pH in Human Platelets”, J. Biol. Chem., 1986, 261(28), 13160.
6) G. R. Bright, W. Fisher, J. Rogowska and L. Taylor, “Fluorescence Ratio Imaging Microscopy: Temporal and Spatial Measurements of Cytoplasmic pH”, J. Cell Biol., 1987, 104, 1019.
7) C. Aalkjaer and E. J. Gragoe Jr, “Intracellular pH Regulation in Resting and Contracting Segments of Rat Mesenteric Resistance Vessels”, J. Physiol., 1988, 402, 391.
8) K. Tsujimoto, M. Semadeni, M. Huflejt and L. Packer, “Intracellular pH of Halobacteria Can Be Determined by the Fluorescent Dye 2′,7′-bis(carboxyethyl)-5(6)-carboxyfluorescein”, Biochem. Biophys. Res. Commun., 1988, 155, 123.
9) M. A. Kolber, R. R. Quinones, R. E. Gress and P. A. Henkart, “Measurament of Cytotoxicity by Target Cell Release and Retention of the Fluorescent Dye Bis-carboxyethyl-carboxyfluorescein(BCECF)”, J. Immunol. Methods, 1988, 108, 255.
10) H. Harada, Y. Kanai, M. Anzai and Y. Suketa, “cAMP Activates Cl^–/HCO₃^– Exchange for Regulation of Intracellular pH in Renal Epithelial Cells”, Biochim. Biophys. Acta, 1991, 1092, 404.
11) C. C. Freudenrich, E. Murphy, L. A. Levy, R. E. London and M. Lieberman, “Intracellular pH Modulates Cytosolic Free Magnesium in Cultured Chicken Heart Cells”, Am. J. Physiol., 1992, 262(4), C1024.
12) K. Khodakhah and D. Ogden, “Functional Heterogeneity of Calcium Release by Inositol Triphosphate in Single Purkinje Neurones, Cultured Cerebellar Astorocytes, and Peripheral Tissues”, Proc. Natl. Acad. Sci. USA, 1993, 90, 4976.
13) G. Boyarsky, C. Hanssen and L. A. Clyne, “Superiority of in vitro Over in vivo Calibrations of BCECF in Vascular Smooth Muscle Cells”, FASEB J., 1996, 10, 1205.
14) S. A. Weston and C. R. Parish, “New Fluorescent Dyes for Lymphocyte Migration Studies Analysis by Flow Cytometry and Fluorescent Microscopy”, J. Immunol. Methods, 1990, 133, 87.
15) L. S. D. Clerck, C. H. Bridts, A. M. Mertens, M. M. Moens and W. J. Stevens, “Use of Fluorescent Dyes in the Determination of Adherence of Human Leucocytes to Endothelial Cells and the Effects of Fluorochromes on Cellular Function”, J. Immunol. Methods, 1994, 172, 115.

规格性状：

该产品为橙色至红棕色粉末，可溶于甲醇。

纯度（HPLC）：85.0％以上

溶于甲醇：测试合格

荧光光谱：测试合格

红外光谱：测试合格

NMR光谱：测试一致

处理条件：

1.储存方法：避光