日本同仁化学FDA试剂货号:F209 Fluorescein diacetate| DOJINDO

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FDA试剂货号:F209
Fluorescein diacetate
Fluorescein diacetate
商品信息
储存条件:0-5度保存,避光
运输条件:室温
分子式:

C24H16O7

分子量:

416.38

特点:

 

● 激发和发射波长分别为488 nm和530 nm

● 可用于流式细胞仪

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选择规格:
1mg

期货

细胞染色

FDA试剂货号:F209 Fluorescein diacetate

FDA试剂货号:F209 Fluorescein diacetate

规格性状
产品概述
荧光特性
参考文献
常见问题Q&A

规格性状

规格

特性:该产物为白色结晶粉末或固体,可溶于二甲基亚砜。

可溶于二甲基亚砜:试验成功

NMR光谱:试验成功

产品概述

FDA可透过细胞膜并作为荧光素积蓄在活细胞内。由于荧光素较BCECF或Calcein的亲水性低,因此荧光素从细胞中渗漏的量也高。FDA也可用于流式细胞仪。荧光素的激发和发射波长分别为488 nm和530 nm。

荧光特性

荧光特性:λex=488 nm, λem=530 nm

参考文献

1) B. Rotman and B. W. Papermaster, “Membrane Properties of Living Mammalian Cells as Studied by Enzymatic Hydrolysis of Fluorogenic Esters”, Proc. Natl. Acad. Sci. USA, 1966, 55, 134.

2) H. R. Hulett, W. A. Bonner, J. Barrett and L. A. Herzenberg, “Cell Sorting: Automated Separation of Mammalian Cells as a Function of Intercellular Fluorescence”, Science, 1969, 166, 747.

3) K. H. Jones and J. A. Senft, “An Improved Method to Determine Cell Viability by Simultaneous Staining with Fluorescein Diacetate-Propidium Iodide”,J.Histochem.Cytochem., 1985, 33, 77.

4) K. McGinnes, G. Chapman, R. Marks and R. Penny, “A Fluorescence NK Assay Using Flow Cytometry”, J. Immunol. Methods, 1986, 86, 7.

5) W. M. J. Vuist, F. V. Buitenen, M. A. De Rie, A. Hekman, P. Ruemke and C. J. M. Melief, “Potentiation by Interleukin 2 of Burkitt’s Lymphoma Therapy with Anti-Pan B (Anti-CD19) Monoclonal Antibodies in a Mouse Xenotransplantation Model”, Cancer Res., 1989, 49, 3783.

6) E. Prosperi, “Intracellular Turnover of Fluorescein Diacetate. Influence of Membrane Ionic Gradients on Fluorescein Efflux”, Histochem.J., 1990, 22, 227.

常见问题Q&A

Q1:如何使用FDA。

 

 

 

 

 

A1:下面给出一个例子。请根据细胞的种类,观察条件讨论细胞的固定和试剂浓度。

【例1】HeLa细胞的形态观察

将1mg的FDA溶解在2ml的DMSO中(储存溶液)

用PBS(-)溶液稀释,设为2μmol/L。(用5ml PBS(-)稀释8μl贮存溶液)

1)用胰蛋白酶-EDTA等回收HaLa细胞,制备细胞悬浊液。

2)离心分离细胞悬浊液(1000rpm, 3min)

3)除去上清,添加PBS(-)(此时细胞数为105 ~ 106cells /mL)

4)通过粘贴等充分分散。

*因为培养液中的血清等有使背景上升的危险重复②~④的操作充分清洗。

5)在1.5 mL微管中添加用4)得到的30μL细胞悬浊液。

6)在此加入15μL的FDA溶液。

7)盖上微管,37℃下孵育15min。

8)在玻璃罩上放上7)的溶液10μL,从上面再盖上一层玻璃,夹入染色的细胞悬浊液。

9)将盖杯置于荧光显微镜下,用490nm滤光器激发,观察发出黄绿色荧光的活细胞。

例2:C57BL/6小鼠脾脏细胞的双重染色,使用FDA和PI。

k.h.j ones, j.a. senft, J.Histochem.Cytochem., 33, 77 (1985).

将5mg的FDA溶解在1ml的丙酮中(储备溶液)

将上述0.04 mL溶液稀释为10ml PBS(-)。

PI将1mg溶解在50ml PBS(-)中。

在0.2 mL D-PBS溶液中混浊的细胞(2×106 cells/mL)溶液中添加0.1 mL的FDA溶液和0.03 mL的PI溶液。

孵化后观察。

【例3】使用HeLa细胞的细胞膜离子梯度对Fluorescein溶出的影响

·E.Prosperi, Histochem. J., 22, 227 (1990).

将5mg的FDA溶解在1ml的丙酮中(储备溶液)

用PBS(-),终浓度2.4μmol/L染色。

 

Q2:细胞染料的激发波长和发射波长是多少。

A2:

FDA试剂货号:F209 Fluorescein diacetate

日本同仁化学Ab-10 Rapid Fluorescein Labeling Kit试剂盒货号:LK32 荧光素快速标记试剂盒(微量)| DOJINDO

上海金畔生物科技有限公司代理日本同仁化学 DOJINDO代理商全线产品,欢迎访问官网了解更多信息

Ab-10 Rapid Fluorescein Labeling Kit试剂盒货号:LK32
荧光素快速标记试剂盒(微量)
Ab-10 Rapid Fluorescein Labeling Kit
商品信息
储存条件:0-5度保存
运输条件:室温

下载说明书
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3samples

 期货

 
蛋白抗体标记检测方案

Ab-10 Rapid Fluorescein Labeling Kit试剂盒货号:LK32 荧光素快速标记试剂盒(微量)
Biotin Labeling Kit – NH2试剂盒
生物素抗体标记试剂盒-氨基

Peroxidase Labeling Kit – NH2试剂盒
过氧化物酶标记试剂盒-氨基

Biotin Labeling Kit – NH2 (for 1mg)试剂盒
生物素标记试剂盒-氨基

Fluorescein Labeling Kit – NH2试剂盒
荧光素标记试剂盒-氨基

Isothiocyanobenzyl-EDTA试剂
Isothiocyanobenzyl-EDTA

日本同仁化学Fluorescein Labeling Kit – NH2试剂盒货号:LK01 荧光素标记试剂盒-氨基| DOJINDO

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Fluorescein Labeling Kit – NH2试剂盒货号:LK01
荧光素标记试剂盒-氨基
Fluorescein Labeling Kit – NH2
商品信息
储存条件:0-5度保存
运输条件:室温

特点:

● 荧光素标记的产品可以在大约2小时内制备。

● 可以标记分子量为50,000或更高的蛋白质。

● 可以标记50至200μg的蛋白质。

● 可以通过使用过滤管的分离操作以高回收率获得标记物质。

● 荧光素标记的物体可以与所附的存储溶液一起存储。

下载说明书
SDS下载
宣传资料

选择规格:
3samples

 现货

 
蛋白抗体标记检测方案

Fluorescein Labeling Kit – NH2试剂盒货号:LK01 荧光素标记试剂盒-氨基

Fluorescein Labeling Kit – NH2试剂盒货号:LK01 荧光素标记试剂盒-氨基

活动进行中
试剂盒内含
产品概述
原理
产品优势
荧光特性
操作步骤
标记率计算
常见问题Q&A
参考文献

活动进行中

订购满5000元,200元礼品等你拿

凑单关联产品TOP5

NO.1.   Biotin Labeling Kit – NH2    生物素抗体标记试剂盒-氨基

NO.2.    Peroxidase Labeling Kit – NH2    过氧化物酶标记试剂盒-氨基

NO.3.    Cell Counting Kit-8     细胞增殖毒性检测  

NO.4.    Annexin V, FITC Apoptosis Detection Kit    细胞凋亡检测

NO.5.    Cytotoxicity LDH Assay Kit-WST   乳酸脱氢酶(LDH)检测

 

试剂盒内含

Fluorescein Labeling Kit – NH2试剂盒货号:LK01 荧光素标记试剂盒-氨基

产品概述

该试剂盒主要用于制备用荧光素标记的蛋白质,如免疫转染中的IgG和胞内蛋白示踪。氨基反应型荧光素是试剂盒的成分之一,它含有琥珀酰亚胺基(NHS),能与蛋白质或者其它分子的氨基反应。该试剂盒中包含了标记所需的全部试剂,包括Storage buffer。每一管荧光素最多能够标记200μg的IgG,每个IgG分子可与4-6个荧光素分子共价结合。该试剂盒还包含一个缓冲液交换系统,因此含有氨基缓冲液的样品也能用此试剂盒来标记。虽然用膜来过滤有时会导致IgG聚集,但是试剂盒中的缓冲液交换系统能够防止标记过程中聚集现象的发生。用该试剂盒标记的抗体在4℃下能够保存至少2个月。被荧光素标记后的IgG的激发和发射波长分别为495nm和520nm。

原理

Fluorescein Labeling Kit – NH2试剂盒货号:LK01 荧光素标记试剂盒-氨基

产品优势

1)荧光素标记的产品可以在大约2小时内制备。

2)可以标记分子量为50,000或更高的蛋白质。

3)可以标记50至200μg的蛋白质。

4)可以通过使用过滤管的分离操作以高回收率获得标记物质。

5)荧光素标记的物体可以与所附的存储溶液一起存储。

荧光特性

Fluorescein Labeling Kit – NH2试剂盒货号:LK01 荧光素标记试剂盒-氨基

操作步骤

使用注意事项:

1. 用该试剂盒标记的蛋白质的分子量要>50,000。

2. 在标记过程中,IgG或者Fluorescein -IgG标记物始终存在于Filtration tube的滤膜上。

3. 如果IgG溶液中含有分子量>10,000的其他蛋白质,如BSA或明胶时,在使用该试剂盒标记前,先要纯化IgG溶液。IgG溶液能够用IgG Purification Kits(不包含于本试剂盒 中)来纯化。

4. 如果IgG溶液含有小的不溶物,离心后取上清液来进行标记。

5. 如果长时间不使用,建议您把试剂盒中的标记试剂NH2-reactive fluorescein放在-20℃冰箱中保存,不需要充氮气,可以更好地保持标记试剂的活性,但请不要把其它试剂和过滤管放到-20℃冰箱中,仍请放在0-5℃冰箱中保存。

Fluorescein Labeling Kit – NH2试剂盒货号:LK01 荧光素标记试剂盒-氨基

a) 样品溶液的体积不应超过100μl。如果抗体浓度低于1mg/ml,重复步骤1和2直至总的IgG聚积量达到100 μg。如果聚积过程中滤液的体积超过400μl,则在进行后续的离心操作前应除去滤液。
b) 如果溶液在离心后仍然残留在膜上,可以再离心5 min或者适当增加转速直至膜上没有残留液体。
c) NH2-Reactive Fluorescein Dye在管子的底部,向管底加入10μl DMSO,吹打数次使其溶解,如果没有DMSO的话,可以用乙醇来替代。
d) 如果IgG的量为200μg,在步骤4时加入所有的NH2-Reactive Fluorescein Dye溶液。
e) 并不一定要使用WS Buffer来回收标记产物,可以选择任何适合于该实验的缓冲液来替代。

标记率计算

计算标记率:

1分子蛋白质上结合的荧光素的数量 (标记率) 的计算方法:将标记的蛋白质溶液用5倍的中性缓冲液稀释,分别测定在280nm和各个荧光染料的最大吸收波长处的吸光度,采用以下公式计算。

Fluorescein Labeling Kit – NH2试剂盒货号:LK01 荧光素标记试剂盒-氨基

* 如果是IgG,摩尔吸光系数ε=216,000。

* 荧光染料在WS缓冲液中的摩尔吸光系数参见下表:

Fluorescein Labeling Kit – NH2试剂盒货号:LK01 荧光素标记试剂盒-氨基

常见问题Q&A

Q1:能够用这个试剂盒标记其他蛋白质吗?
A:可以。只要标记分子的分子量>50,000。
Q2:标记蛋白之前是否必须使用过滤管?
A:如果蛋白溶液中不含有带有活性氨基的小分子且蛋白浓度在10mg/ml或者70μM左右时,可以不使用过滤管来过滤,只需要将10μl 样品溶液和90μl Reaction Buffer以及8μl NH2-reactive Fluorescein(由步骤3所得)混合并按照操作说明上的方法做从步骤4开始的后续试验。
Q3:能够使用这个试剂盒标记寡核苷酸或者寡肽吗?
A:不行。寡核苷酸或者寡肽可能因为分子量太小而不能存在于滤膜上。
Q4:用该试剂盒所能标记的IgG的最小量是多少?
A:IgG的最小量为10μg。IgG的量在10μg-100μg之间时,标记比率是相同的。
Q5:标记产物能保存多久?
A:在4℃下能够保存2个月。如果需要保存更久,可以添加等量的丙三醇,并在-20℃下存放。但是,还要注意样品自身是否稳定。

参考文献

1) M. Hiyoshi, S. Suzu, Y. Yoshidomi, R. Hassan, H. Harada, N. Sakashita, H. Akari,   K. Motoyoshi and S. Okada, “Interaction between Hck and HIV-1 Nef Negatively Regulates Cell Surface Expression of M-CSF Receptor”, Blood, 2008, 111(1), 243.
2) W. Aung, A. Tsuji, H.   Sudo, A. Sugyo, T. Furukawa, Y. Ukai, Y. Kurosawa and T. Saga,   “Immunotargeting of Integrin α6β4 for Single-Photon Emission Computed   Tomography and Near-Infrared Fluorescence Imaging in a Pancreatic Cancer   Model”, Molecular Imaging, 2016, 15, 1.
3) A. Shinya, K. Yamamoto, M.   Kurata, S. Abe-Suzuki, R. Horii, F. Akiyama and M. Kitagawa, “Targeting   MCM2 function as a novel strategy for the treatment of highly malignant   breast tumors”, Oncotarget., 2015, 6, (33), 34892.
4) K.M. Nishida, T.N. Okada,   T. Kawamura, T. Mituyama, Y. Kawamura, S. Inagaki, H. Huang, D. Chen, T.   Kodama, H. Siomi and M.C. Siomi, “Functional involvement of Tudor and   dPRMT5 in the piRNA processing pathway in Drosophila germlines”, EMBO J..,   2009, 28, (24), 3820.
5) P.G. Sreekumar, R. Kannan,   M. Kitamura, C. Spee, E. Barron, S.J. Ryan and D.R. Hinton, “αB   crystallin is apically secreted within exosomes by polarized human retinal   pigment epithelium and provides neuroprotection to adjacent cells”, PLoS   ONE., 2010, 5, (10), e12578.
6) R. Asano, T. Kumagai, K.   Nagai, S. Taki, I. Shimomura, K. Arai, H. Ogata, M. Okada, F. Hayasaka, H.   Sanada, T. Nakanishi, T. Karvonen, H. Hayashi, Y. Katayose, M. Unno, T. Kudo,   M. Umetsu and I. Kumagai, “Domain order of a bispecific diabody dramatically   enhances its antitumor activity beyond structural format conversion: the case   of the hEx3 diabody”, Protein Eng. Des. Sel.., 2013, 26, (5), 359.
7) R. Asano, I. Shimomura, S.   Konno, A. Ito, Y. Masakari, R. Orimo, S. Taki, K. Arai, H. Ogata, M. Okada,   S. Furumoto, M. Onitsuka, T. Omasa, H. Hayashi, Y. Katayose, M. Unno, T.   Kudo, M. Umetsu and I. Kumagai, “Rearranging the domain order of a diabody-based   IgG-like bispecific antibody enhances its antitumor activity and improves its   degradation resistance and pharmacokinetics”, MAbs., 2014, 6, (5), 1243.
8) R. Asano, K. Ikoma, I.   Shimomura, S. Taki, T. Nakanishi, M. Umetsu and I. Kumagai, “Cytotoxic   enhancement of a bispecific diabody by format conversion to tandem   single-chain variable fragment (taFv): the case of the hEx3 diabody”, J.   Biol. Chem.., 2011, 286, (3), 1812.
9) T. Toyotome, M. Yamaguchi,   A. Iwasaki, A. Watanabe, H. Taguchi, L. Qin, H. Watanabe and K. Kamei,   “Fetuin A, a serum component, promotes growth and biofilm formation by   Aspergillus fumigatus”, Int. J. Med. Microbiol.., 2012, 302, (2), 108.
10) W. Ma, V. Schubert, M. M.   Martis, G. Hause, Z. Liu, Y. Shen, U. Conrad, W. Shi, U. Scholz, S. Taudien,   Z. Cheng and A. Houben, “The distribution of α-kleisin during meiosis in   the holocentromeric plant Luzula elegans”, Chromosome Res.., 2016, 24,   (3), 393.
11) Y. Yokoi, K. Nakamura, T. Yoneda, M.   Kikuchi, R. Sugimoto, Y. Shimizu and T. Ayabe, “Paneth cell granule   dynamics on secretory responses to bacterial stimuli in enteroids”, Sci.   Rep.., 2019, 9, 2710.
12) Y.J. Lee, S.R. Han, N.Y.   Kim, S.H. Lee, J.S. Jeong and S.W. Lee, “An RNA aptamer that binds   carcinoembryonic antigen inhibits hepatic metastasis of colon cancer cells in   mice”, Gastroenterology., 2012, 143, (1), 155.
13) C. F.O.Hoya, K. Kushiro,   Y. Yamaoka, A. Ryo and M. Takai, ‘Rapid multiplex microfiber-based   immunoassay for anti-MERS-CoV antibody detection’, Sens Biosensing Res.,   2019,10.1016/j.sbsr.2019.100304.
14) H. Takeuchi, N Sasaki, S.   Yamaga, M. Kuboniwa, M. Matsusaki and A. Amano, “Porphyromonas   gingivalis induces penetration of lipopolysaccharide and peptidoglycan   through the gingival epithelium via degradation of junctional adhesion   molecule 1”, PLoS Pathog., 2019, 15, (11), e1008124.
15) Y. Yanase, Y. Matsuo, T.   Kawaguchi, K. Ishii, A. Tanaka , K. Iwamoto , S. Takahagi and M.Hide,   “Activation of Human Peripheral Basophils in Response to High IgE   Antibody Concentrations without Antigens”., Int J Mol Med Sci, 2019, 20,   (1), 45.
16) M. Yashiro, M. Ohya, T.   Mima, Y. Nakashima, K. Kawakami, T. Sonou, K. Tatsuta, Y. Yamano, S. Negi and   T. Shigematsu, “Excessive ADAM17 activation occurs in uremic patients   and may contribute to their immunocompromised status.”, Immun Inflamm   Dis., 2020, 10.1002/iid3.298.
17) H Fujishiro, H Yamamoto,   N Otera, N Oka, M Jinno and S. Himeno, “In vitro Evaluation of The   Effects of Cadmium on Endocytic Uptakes of Proteins into Cultured Proximal   Tubule Epithelial Cells.”, Toxics, 2020, 8,10.3390/toxics8020024
18) Y. Liu, Y. Liu, X. Zheng, L. Zhao   and X. Zhang, “Recapitulating and Deciphering Tumor Microenvironment by   Using 3D Printed Plastic Brick–Like Microfluidic Cell Patterning”, Adv   Healthc Mater, 2020, 9, (6), 1901713.

荧光染料N-(Azido-PEG3)-N-Fluorescein-PEG3-acid

荧光染料Dye Reagents N-(Azido-PEG3)-N-Fluorescein-PEG3-acid;

N-(Azido-PEG3)-N-Fluorescein-PEG3-acid 是一个 PEGPROTAC linker ,包含了叠氮,荧光素和羧酸基。

N-(Azido-PEG3)-N-Fluorescein-PEG3-acid

N-(Azido-PEG3)-N-Fluorescein-PEG3-acid Chemical Structure

CAS No. : 2100306-50-9

规格 是否有货
1 mg 询价

* Please select Quantity before adding items.

生物活性

N-(Azido-PEG3)-N-Fluorescein-PEG3-acid is a PEG-based PROTAC linker which contains azide, fluorescein and carboxylic acid moieties.

IC50 Target

PEGs

;

体外研究
(In Vitro)

PROTACs contain two different ligands connected by a linker; one is a ligand for an E3 ubiquitin ligase and the other is for the target protein. PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins.

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

分子量

811.85

Formula

C38H45N5O13S

CAS 号

2100306-50-9

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

Please store the product under the recommended conditions in the Certificate of Analysis.

FITC(Synonyms: 异硫氰酸荧光素酯 Fluorescein 5-isothiocyanate)

FITC;(Synonyms: 异硫氰酸荧光素酯; Fluorescein 5-isothiocyanate) 纯度: 98.77%

FITC (Fluorescein 5-isothiocyanate) 是一种用于胺标记的荧光探针。FITC 是对 pH 和 Cu2+ 敏感的荧光染料。

FITCamp;;(Synonyms: 异硫氰酸荧光素酯; Fluorescein 5-isothiocyanate)

FITC Chemical Structure

CAS No. : 3326-32-7

规格 价格 是否有货 数量
Free Sample (0.1-0.5 mg) ; Apply now ;
10;mM;*;1 mL in DMSO ¥550 In-stock
100 mg ¥500 In-stock
500 mg ¥990 In-stock
1 g ¥1683 In-stock
5 g ; 询价 ;
10 g ; 询价 ;

* Please select Quantity before adding items.

FITC 相关产品

bull;相关化合物库:

  • Bioactive Compound Library Plus

生物活性

FITC (Fluorescein 5-isothiocyanate) is a fluorescence probe for the labeling of amines. FITC is a pH- and Cu2+-sensitive fluorescence dye[1][2].

体外研究
(In Vitro)

Annexin V-FITC/PI is employed to detect chondrocyte apoptosis[1]. The PEI-modified CDs are conjugated with fluorescein isothiocyanate (FITC) to fabricate CDs-FITC composites[2].

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

分子量

389.38

Formula

C21H11NO5S

CAS 号

3326-32-7

中文名称

异硫氰酸荧光素酯;荧光素-5-异氰酸酯

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

-20deg;C, protect from light, stored under nitrogen

*In solvent : -80deg;C, 6 months; -20deg;C, 1 month (protect from light, stored under nitrogen)

溶解性数据
In Vitro:;

DMSO : 83.33 mg/mL (214.01 mM; Need ultrasonic)

H2O : < 0.1 mg/mL (insoluble)

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 2.5682 mL 12.8409 mL 25.6819 mL
5 mM 0.5136 mL 2.5682 mL 5.1364 mL
10 mM 0.2568 mL 1.2841 mL 2.5682 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 (protect from light, stored under nitrogen)。-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。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液,再依次添加助溶剂:

——为保证实验结果的可靠性,澄清的储备液可以根据储存条件,适当保存;体内实验的工作液,建议您现用现配,当天使用; 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比;如在配制过程中出现沉淀、析出现象,可以通过加热和/或超声的方式助溶

  • 1.

    请依序添加每种溶剂:;10% DMSO ;; 40% PEG300 ;; 5% Tween-80 ;; 45% saline

    Solubility: ≥ 2.08 mg/mL (5.34 mM); Clear solution

    此方案可获得 ≥ 2.08 mg/mL (5.34 mM,饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例,取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中,混合均匀;向上述体系中加入50 μL Tween-80,混合均匀;然后继续加入 450 μL生理盐水定容至 1 mL。

    将 0.9 g 氯化钠,完全溶解于 100 mL ddH₂O 中,得到澄清透明的生理盐水溶液

  • 2.

    请依序添加每种溶剂:;10% DMSO ;; 90% (20% SBE-β-CD in saline)

    Solubility: 2.08 mg/mL (5.34 mM); Suspended solution; Need ultrasonic

    此方案可获得 2.08 mg/mL (5.34 mM) 的均匀悬浊液,悬浊液可用于口服和腹腔注射。

    以 1 mL 工作液为例,取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中,混合均匀。

    将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中,再用生理盐水定容至 10 mL,完全溶解,澄清透明
*以上所有助溶剂都可在 MCE 网站选购。
参考文献
  • [1]. Gao SG, et al. Phosphorylation of osteopontin has proapoptotic and proinflammatory effects on human knee osteoarthritis chondrocytes. Exp Ther Med. 2016 Nov;12(5):3488-3494. Epub 2016 Oct 5.

    [2]. Zhu X, et al. Ratiometric, visual, dual-signal fluorescent sensing and imaging of pH/copper ions in real samples based on carbon dots-fluorescein isothiocyanate composites. Talanta. 2017 Jan 1;162:65-71

Cell Assay
[1]

The frequency of chondrocyte apoptosis is measured by flow cytometry with Annexin V-fluorescein isothiocyanate (FITC) and propidium iodide. A total of 1×104 treated chondrocytes are collected from each group, washed in cold PBS and incubated with Annexin V-FITC and PI at room temperature for 15 min in the dark on ice. These samples are then analyzed using a fluorescence-activated cell sorter. Cell Quest software is used to analyze the percentage of apoptosis. All tests are repeated in triplicate.

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

参考文献
  • [1]. Gao SG, et al. Phosphorylation of osteopontin has proapoptotic and proinflammatory effects on human knee osteoarthritis chondrocytes. Exp Ther Med. 2016 Nov;12(5):3488-3494. Epub 2016 Oct 5.

    [2]. Zhu X, et al. Ratiometric, visual, dual-signal fluorescent sensing and imaging of pH/copper ions in real samples based on carbon dots-fluorescein isothiocyanate composites. Talanta. 2017 Jan 1;162:65-71

荧光染料5MP-Fluorescein

荧光染料Dye Reagents 5MP-Fluorescein;

5MP-Fluorescein (compound 3e) 是一种基于 5-亚甲基吡咯酮 (5MP) 的荧光素染料。5-亚甲基吡咯酮是高度硫醇特异性和无痕可去除的生物偶联工具。

5MP-Fluorescein

5MP-Fluorescein Chemical Structure

CAS No. : 2100282-58-2

规格 是否有货
100 mg ; 询价 ;
250 mg ; 询价 ;
500 mg ; 询价 ;

* Please select Quantity before adding items.

生物活性

5MP-Fluorescein (compound 3e) is a fluorescein dye base on 5-Methylene pyrrolone (5MP).5-Methylene pyrrolones are highly thiol-specific and tracelessly removable bioconjugation tools[1].

分子量

425.39

Formula

C25H15NO6

CAS 号

2100282-58-2

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

Please store the product under the recommended conditions in the Certificate of Analysis.

参考文献
  • [1]. Yingqian Zhang, et al. Thiol Specific and Tracelessly Removable Bioconjugation via Michael Addition to 5-Methylene Pyrrolones. J Am Chem Soc. 2017 May 3;139(17):6146-6151.

Fluorescein Diacetate(Synonyms: 荧光素二乙酸酯; 3,6-Diacetoxyfluoran; Di-O-acetylfluorescein)

生化分析试剂 Biochemical Assay Reagents
Fluorescein Diacetate;(Synonyms: 荧光素二乙酸酯; 3,6-Diacetoxyfluoran; Di-O-acetylfluorescein) 纯度: 99.91%

Fluorescein diacetate 是一种细胞渗透性的酯酶底物。Fluorescein diacetate 可作为人谷胱甘肽硫转移酶 Pi (hGSTP1-1) 的荧光底物。

Fluorescein Diacetate(Synonyms: 荧光素二乙酸酯; 3,6-Diacetoxyfluoran;  Di-O-acetylfluorescein)

Fluorescein Diacetate Chemical Structure

CAS No. : 596-09-8

规格 价格 是否有货 数量
Free Sample (0.1-0.5 mg) ; Apply now ;
10;mM;*;1 mL in DMSO ¥500 In-stock
500 mg ¥400 In-stock
5 g ¥500 In-stock
10 g ; 询价 ;
50 g ; 询价 ;

* Please select Quantity before adding items.

Fluorescein Diacetate 相关产品

bull;相关化合物库:

  • Bioactive Compound Library Plus

生物活性

Fluorescein diacetate is a cell permeable esterase-substrate. Fluorescein diacetate can be used as a fluorogenic substrate for hGSTP1-1.

体外研究
(In Vitro)

Fluorescein diacetate (FDA) is an acetylated derivative of the green fluorescent dye fluorescein[1]. Fluorescein diacetate (FDA), a fluorescent probe used for vital staining, is a fluorescently activated by esterolytic activity of human Pi-class glutathione S-transferase (hGSTP1) selectively among various cytosolic GSTs. Fluorescence activation of Fluorescein diacetate susceptible to GST inhibitors is observed in MCF7 cells exogenously overexpressing hGSTP1, but not in cells overexpressing hGSTA1 or hGSTM1. Fluorescein diacetate can be used as a fluorogenic substrate for hGSTP1-1. To investigate whether the fluorescence activation is due to hGSTP1 activity, Fluorescein diacetate is incubated with recombinant hGSTP1-1 and GSH in vitro. Remarkable fluorescence activation is observed in the presence of both hGSTP1-1 and GSH, whereas only slight activation is observed in the absence of either of them or when the enzyme is heat inactivated. This suggests that the fluorescence activation of Fluorescein diacetate depends on hGSTP1-1 activity. From the linear relationship between the rate of increase in fluorescence and the hGSTP1-1 concentration, the specific activity of the enzyme for 1 μM Fluorescein diacetate is determined to be 79±15 nmol/min/mg protein. Fluorescein diacetate is applicable as a fluorogenic substrate for evaluating inhibitors of GSTP1-1 in vitro. For Fluorescein diacetate as a substrate, both Ethacrynic acid (EA) and NBDHEX suppress the hGSTP1-1-dependent fluorescent increase in a concentration-dependent manner, with IC50s of 3.3±0.5 μM and 0.61±0.04 μM, respectively[2].

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

分子量

416.38

Formula

C24H16O7

CAS 号

596-09-8

中文名称

二乙酸荧光素;荧光素二乙酸盐;荧光素二乙酸酯

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

-20deg;C, protect from light

*In solvent : -80deg;C, 6 months; -20deg;C, 1 month (protect from light)

溶解性数据
In Vitro:;

DMSO : 26.67 mg/mL (64.05 mM; Need ultrasonic)

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 2.4017 mL 12.0083 mL 24.0165 mL
5 mM 0.4803 mL 2.4017 mL 4.8033 mL
10 mM 0.2402 mL 1.2008 mL 2.4017 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 (protect from light)。-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。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液,再依次添加助溶剂:

——为保证实验结果的可靠性,澄清的储备液可以根据储存条件,适当保存;体内实验的工作液,建议您现用现配,当天使用; 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比;如在配制过程中出现沉淀、析出现象,可以通过加热和/或超声的方式助溶

  • 1.

    请依序添加每种溶剂:;10% DMSO ;; 90% (20% SBE-β-CD in saline)

    Solubility: ≥ 2.08 mg/mL (5.00 mM); Clear solution

    此方案可获得 ≥ 2.08 mg/mL (5.00 mM,饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例,取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中,混合均匀。

    将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中,再用生理盐水定容至 10 mL,完全溶解,澄清透明
  • 2.

    请依序添加每种溶剂:;10% DMSO ;; 90% corn oil

    Solubility: ≥ 2.08 mg/mL (5.00 mM); Clear solution

    此方案可获得 ≥ 2.08 mg/mL (5.00 mM,饱和度未知) 的澄清溶液,此方案不适用于实验周期在半个月以上的实验。

    以 1 mL 工作液为例,取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中,混合均匀。

*以上所有助溶剂都可在 MCE 网站选购。
参考文献
  • [1]. Boyd V, et al. Limitations in the Use of Fluorescein Diacetate/Propidium Iodide (FDA/PI) and Cell PermeableNucleic Acid Stains for Viability Measurements of Isolated Islets of Langerhans. Curr Trends Biotechnol Pharm. 2008 Mar;2(2):66-84.

    [2]. Fujikawa Y, et al. Fluorescein diacetate (FDA) and its analogue as substrates for Pi-class glutathione S-transferase (GSTP1) and their biological application. Talanta. 2018 Mar 1;179:845-852.

Cell Assay
[2]

MCF7 cells (2-3×105) are seeded in a 35-mm glass bottom dish before the experiment. Prior to imaging, cells are washed with 1 mL PBS, then incubated in 1 mL Hanks’ Balanced Salt solution (HBSS(+) without phenol red) containing 1 μM Fluorescein diacetate (0.1% DMSO as a cosolvent) for 5 min at 37°C. Cells are washed twice with 1 mL PBS and 1 mL HBSS is added before imaging. Fluorescence images of fluorescein and DsRed-Express2 were acquired in the FITC channel (excitation at 473 nm) and the DsRed channel (excitation 559 nm). The 16-bit images obtained are analysed[2].

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

参考文献
  • [1]. Boyd V, et al. Limitations in the Use of Fluorescein Diacetate/Propidium Iodide (FDA/PI) and Cell PermeableNucleic Acid Stains for Viability Measurements of Isolated Islets of Langerhans. Curr Trends Biotechnol Pharm. 2008 Mar;2(2):66-84.

    [2]. Fujikawa Y, et al. Fluorescein diacetate (FDA) and its analogue as substrates for Pi-class glutathione S-transferase (GSTP1) and their biological application. Talanta. 2018 Mar 1;179:845-852.

Fluorescein-5-maleimide(Synonyms: 荧光素-5-马来酰亚胺 N-(5-Fluoresceinyl)maleimide)

Fluorescein-5-maleimide;(Synonyms: 荧光素-5-马来酰亚胺; N-(5-Fluoresceinyl)maleimide) 纯度: 98.10%

Fluorescein-5-maleimide 是一种硫醇反应荧光染料,可用于将荧光素与蛋白质缀合(激发波长:494nm,发射波长:519nm)。

Fluorescein-5-maleimideamp;;(Synonyms: 荧光素-5-马来酰亚胺; N-(5-Fluoresceinyl)maleimide)

Fluorescein-5-maleimide Chemical Structure

CAS No. : 75350-46-8

规格 价格 是否有货 数量
10 mg ¥600 In-stock
25 mg ¥1200 In-stock
50 mg ¥2100 In-stock
100 mg ; 询价 ;
200 mg ; 询价 ;

* Please select Quantity before adding items.

Fluorescein-5-maleimide 相关产品

bull;相关化合物库:

  • Bioactive Compound Library Plus

生物活性

Fluorescein-5-maleimide is a fluorescent thiol-reactive dye used to conjugate fluorescein to proteins (excitation: 494 nm, emission: 519 nm).

分子量

427.36

Formula

C24H13NO7

CAS 号

75350-46-8

中文名称

荧光素-5-马来酰亚胺

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

-20deg;C, protect from light

*In solvent : -80deg;C, 6 months; -20deg;C, 1 month (protect from light)

溶解性数据
In Vitro:;

DMSO : 83.33 mg/mL (194.99 mM; Need ultrasonic)

H2O : < 0.1 mg/mL (insoluble)

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 2.3399 mL 11.6997 mL 23.3995 mL
5 mM 0.4680 mL 2.3399 mL 4.6799 mL
10 mM 0.2340 mL 1.1700 mL 2.3399 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 (protect from light)。-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。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液,再依次添加助溶剂:

——为保证实验结果的可靠性,澄清的储备液可以根据储存条件,适当保存;体内实验的工作液,建议您现用现配,当天使用; 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比;如在配制过程中出现沉淀、析出现象,可以通过加热和/或超声的方式助溶

  • 1.

    请依序添加每种溶剂:;10% DMSO ;; 40% PEG300 ;; 5% Tween-80 ;; 45% saline

    Solubility: 2.08 mg/mL (4.87 mM); Suspended solution; Need ultrasonic

    此方案可获得 2.08 mg/mL (4.87 mM) 的均匀悬浊液,悬浊液可用于口服和腹腔注射。

    以 1 mL 工作液为例,取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中,混合均匀;向上述体系中加入50 μL Tween-80,混合均匀;然后继续加入 450 μL生理盐水定容至 1 mL。

    将 0.9 g 氯化钠,完全溶解于 100 mL ddH₂O 中,得到澄清透明的生理盐水溶液

*以上所有助溶剂都可在 MCE 网站选购。

荧光染料Br-5MP-Fluorescein

荧光染料Dye Reagents Br-5MP-Fluorescein;

Br-5MP-Fluorescein 是一种用于标记肽和蛋白质的染料试剂。

Br-5MP-Fluorescein

Br-5MP-Fluorescein Chemical Structure

CAS No. : 2468100-39-0

规格 是否有货
100 mg ; 询价 ;
250 mg ; 询价 ;
500 mg ; 询价 ;

* Please select Quantity before adding items.

生物活性

Br-5MP-Fluorescein is a dye reagent for labeling of peptides and proteins[1].

分子量

504.29

Formula

C25H14BrNO6

CAS 号

2468100-39-0

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

Please store the product under the recommended conditions in the Certificate of Analysis.

参考文献
  • [1]. Yingqian Zhang, et al. Cysteine-specific protein multi-functionalization and disulfide bridging using 3-bromo-5-methylene pyrrolones. Nat Commun. 2020 Feb 21;11(1):1015.

Fluorescein(Synonyms: 荧光素 Uranine)

Fluorescein;(Synonyms: 荧光素; Uranine) 纯度: 98.47%

Fluorescein (Uranine) 广泛用作药物和生物应用中的荧光示踪剂以及肿瘤感染组织的示踪剂。Fluorescein (Uranine) 是一种具有代表性的绿色荧光团,已被广泛用作实用绿色荧光探针的支架。

Fluoresceinamp;;(Synonyms: 荧光素; Uranine)

Fluorescein Chemical Structure

CAS No. : 2321-07-5

规格 价格 是否有货 数量
10;mM;*;1 mL in DMSO ¥550 In-stock
250 mg ¥500 In-stock
1 g ¥650 In-stock
5 g ¥750 In-stock
10 g ; 询价 ;
50 g ; 询价 ;

* Please select Quantity before adding items.

Fluorescein 相关产品

bull;相关化合物库:

  • Anti-COVID-19 Compound Library
  • NMPA-Approved Drug Library
  • FDA Approved amp; Pharmacopeial Drug Library
  • Drug-Induced Liver Injury (DILI) Compound Library
  • Rare Diseases Drug Library
  • Childrenrsquo;s Drug Library
  • Drug Repurposing Compound Library Plus
  • FDA-Approved Drug Library Plus
  • FDA-Approved Drug Library Mini
  • Bioactive Compound Library Plus
  • FDA-Approved Drug Library
  • Anti-Cancer Compound Library
  • Drug Repurposing Compound Library

生物活性

Fluorescein (Uranine) is widely used as a fluorescent tracer in medicinal and biological applications and tumor infected tissues tracer. Fluorescein (Uranine) is a representative green fluorophore that has been widely used as a scaffold of practically useful green fluorescent probes[1][2].

体外研究
(In Vitro)

Fluorescein is a synthetic organic photoactive dye compound soluble in water, alcohol and polar solvents[1].

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

Clinical Trial

分子量

332.31

Formula

C20H12O5

CAS 号

2321-07-5

中文名称

荧光素;荧光黄;荧光红;荧光橙;酸性黄73

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

4deg;C, protect from light

*In solvent : -80deg;C, 6 months; -20deg;C, 1 month (protect from light)

溶解性数据
In Vitro:;

DMSO : 250 mg/mL (752.31 mM; Need ultrasonic)

H2O : 1 mg/mL (3.01 mM; ultrasonic and warming and heat to 80°C)

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 3.0092 mL 15.0462 mL 30.0924 mL
5 mM 0.6018 mL 3.0092 mL 6.0185 mL
10 mM 0.3009 mL 1.5046 mL 3.0092 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 (protect from light)。-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。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液,再依次添加助溶剂:

——为保证实验结果的可靠性,澄清的储备液可以根据储存条件,适当保存;体内实验的工作液,建议您现用现配,当天使用; 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比;如在配制过程中出现沉淀、析出现象,可以通过加热和/或超声的方式助溶

  • 1.

    请依序添加每种溶剂:;10% DMSO ;; 40% PEG300 ;; 5% Tween-80 ;; 45% saline

    Solubility: ≥ 2.08 mg/mL (6.26 mM); Clear solution

    此方案可获得 ≥ 2.08 mg/mL (6.26 mM,饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例,取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中,混合均匀;向上述体系中加入50 μL Tween-80,混合均匀;然后继续加入 450 μL生理盐水定容至 1 mL。

    将 0.9 g 氯化钠,完全溶解于 100 mL ddH₂O 中,得到澄清透明的生理盐水溶液

  • 2.

    请依序添加每种溶剂:;10% DMSO ;; 90% (20% SBE-β-CD in saline)

    Solubility: ≥ 2.08 mg/mL (6.26 mM); Clear solution

    此方案可获得 ≥ 2.08 mg/mL (6.26 mM,饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例,取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中,混合均匀。

    将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中,再用生理盐水定容至 10 mL,完全溶解,澄清透明
*以上所有助溶剂都可在 MCE 网站选购。
参考文献
  • [1]. Nabel A Negm, et al. Fluorescein dye derivatives and their nanohybrids: Synthesis, characterization and antimicrobial activity. J Photochem Photobiol B. 2016 Sep;162:421-433.

    [2]. Li Liu, et al. Fluorescein as an artificial enzyme to mimic peroxidase. Chem Commun (Camb). 2016 Nov24;52(96):13912-13915.

    [3]. RobertSjöback, et al. Absorption and fluorescence properties of fluorescein. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy