日本同仁化学GEDTA(EGTA)试剂货号:G002 CAS号: 67-42-5| DOJINDO

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GEDTA(EGTA)试剂货号:G002
O,O’-Bis(2-aminoethyl)ethyleneglycol-N,N,N’,N’-tetraacetic acid
CAS号: 67-42-5
商品信息
储存条件:室温
运输条件:室温
分子式:

C14H24N2O10

分子量:

380.35

特点:

 

● 应用广泛

● 与钙离子结合后稳定

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选择规格:
100g

期货 

 
钙掩蔽

性质
参考文献
常见问题Q&A
规格性状

性质

  乙二醇醚二胺四乙酸(也缩写为EGTA)。 它比EDTA在有机溶剂(DMF)中的溶解度更高。 它的螯合形成常数与EDTA的螯合形成常数没有太大区别,但是由于它的特异性取决于金属,因此可以选择性地滴定Cd / Zn混合样品中Cd的选择性滴定或Ca和Mg共存的Ca的选择性滴定作为滴定度。试剂,可以。 此外,它还广泛用作电位滴定的生化试剂,此外还用作滤纸色谱中的显影液,酶活性,生物膜和肌肉生理机制的研究。

参考文献

1) C. L. Luke and M. E. Campbell, “Photometric Determination of Magnesium in Electronic Nickel”, Anal. Chem. , 1954, 26, 1778. 2) F. S. Sadek, R. W. Schmid and C. N. Reilley, “Visual EGTA Titration of Calcium in Thepresence of Magnesium”, Talanta, 1959, 2, 38.
3) R. A. Burg and H. F. Conaghan, “Chelometric Determination of Calcium and Magnesium in Minerals”, Chem. Anal. 196049, 100.
4) C. D. Dwivedi, K. N. Munshi and A. K. Dey, “Photometric Determination of Gallium, Indium, and Thallium Employing 4-(2-Pyridylazo)resorcinol”, Chem. Anal.1966, 55, 13.
5) F. W. Czech and M. J. McCarthy, “Determination of Acetyl Peroxide in Aqueous Systems Containig Peracetic Acid and Hydrogen Peroxide”, Chem. Anal., 196655, 11.
6) R. Pribil and V. Vesely, “Contributions to the Basic Problems of Complexometry-XX Determination of Calcium and Magnesium”, Talanta196613, 233.
7) 伊藤敦子, 上野景平, “ヒドロキシナフトールブルー(HNB)指示薬を用いるカルシウム、マグネシウムの連続キレート滴定”, Jpn. Anal.197019, 393.
8) 丸山工作, “筋収縮の研究とキレート剤の役割”, Dojin News198118, 1.
9) T. Tatsumi and H. Fliss, “Hypochlorous Acid Mobilizes Intracellular Zinc in Isolated Rat Heart Myocytes”, J. Mol. Cell. Cardiol.199426(4), 471.
10) H. Ohata, Y. Ujiki and K. Momose, “Confocal Imaging Analysis of ATP-Induced Ca2+ Response in Individual Endothelial Cells of the Artery in Situ“, Am. J. Physiol.,1997272(6), 1980.
11) I. Sakabe, S. Paul, W. Dansithong and T. Shinozawa, “Induction of Apoptosis in Neuro-2A Cells by Zn2+ Chelating”, Cell Struct. Funct.199823(2), 95.

常见问题Q&A

如何进行溶解?
由于该产品为游离酸形式,因此几乎不溶于水。可使用碱性水溶液(例如0.1N NaOH)溶解后,再配置为试剂水溶液并使用。

GEDTA会被碱中和并溶解。

1mol 的GEDTA会完全溶解于2mol 的碱中,此时的pH值约为5到6。

规格性状

性状:

本品为白色结晶性粉末,溶于碱。

纯度(滴定度):97.0%以上

碱溶性:测试合格

灼烧残渣(硫酸盐):0.10%以下

重金属(以铅计):0.001%以下

铁(Fe):0.001%以下

EGTA

生化分析试剂 Biochemical Assay Reagents
EGTA; 纯度: ge;98.0%

EGTA 是一种特殊的钙离子螯合剂。EGTA 在生理 pH 值 (7.4) 下,Kd 为 60.5 nM,对 Ca2+ 比对 Mg2+ 有很高的特异性。EGTA 显著抑制炎性巨噬细胞的底物粘附能力。

EGTA

EGTA Chemical Structure

CAS No. : 67-42-5

规格 价格 是否有货 数量
500 mg ¥500 In-stock
1 g ¥850 In-stock
5 g ; 询价 ;
10 g ; 询价 ;

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EGTA 相关产品

bull;相关化合物库:

  • Bioactive Compound Library Plus

生物活性

EGTA is a specific calcium ion chelator. EGTA has an apparent calcium dissociation constant (Kd) of 60.5 nM at physiological pH (7.4) and has very high specificity for Ca2+ over Mg2+ (Mg2+ Kd 1-10 mM). EGTA significantly inhibits the substrate adherence capacity of inflammatory macrophages[1][2].

体外研究
(In Vitro)

EGTA, proposed as endodontic irrigant, decreases substrate adherence capacity of inflammatory macrophages in a time- and dose-dependent manner. The EGTA concentration that causes an IC50 is 202 mM. Chelators react with calcium ions in the hydroxyapatite crystals to produce a metallic chelate. Removal of calcium ions from the dentine makes the dentinal tissue softer, especially the hydroxyapatite-rich peritubular dentin and increases the diameter of exposed dentinal tubules[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

分子量

380.35

Formula

C14H24N2O10

CAS 号

67-42-5

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式
Powder -20deg;C 3 years
4deg;C 2 years
In solvent -80deg;C 6 months
-20deg;C 1 month
溶解性数据
In Vitro:;

H2O : 5 mg/mL (13.15 mM; ultrasonic and warming and adjust pH to 9 with NaOH and heat to 60°C)

DMSO : 1 mg/mL (2.63 mM; Need ultrasonic)

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 2.6292 mL 13.1458 mL 26.2916 mL
5 mM 0.5258 mL 2.6292 mL 5.2583 mL
10 mM 0.2629 mL 1.3146 mL 2.6292 mL

*

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效
储备液的保存方式和期限:-80°C, 6 months; -20°C, 1 month。-80°C 储存时,请在 6 个月内使用,-20°C 储存时,请在 1 个月内使用。

参考文献
  • [1]. Harris RA, Hanrahan JW. Effects of EGTA on calcium signaling in airway epithelial cells. Am J Physiol. 1994;267(5 Pt 1):C1426-C1434. doi:10.1152/ajpcell.1994.267.5.C1426

    [2]. Segura-Egea JJ, Jiménez-Rubio A, Rios-Santos JV, Velasco-Ortega E, Calvo-Gutierrez JR. In vitro inhibitory effect of EGTA on macrophage adhesion: endodontic implications. J Endod. 2003;29(3):211-213.