FITC-xtra
Ordering information
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Additional ordering information
Telephone | 1-800-990-8053 |
Fax | 1-800-609-2943 |
sales@aatbio.com | |
International | See distributors |
Bulk request | Inquire |
Custom size | Inquire |
Shipping | Standard overnight for United States, inquire for international |
Physical properties
Molecular weight | 620.52 |
Solvent | DMSO |
Spectral properties
Excitation (nm) | 498 |
Emission (nm) | 526 |
Storage, safety and handling
H-phrase | H303, H313, H333 |
Hazard symbol | XN |
Intended use | Research Use Only (RUO) |
R-phrase | R20, R21, R22 |
Storage | Freeze (< -15 °C); Minimize light exposure |
UNSPSC | 12171501 |
Overview | ![]() ![]() |
See also: Fluoresceins
Molecular weight 620.52 | Excitation (nm) 498 | Emission (nm) 526 |
Although FITC is still the most popular fluorescent labeling dye for preparing green fluorescent bioconjugates, there are certain limitations with FITC, such as severe photobleaching for microscope imaging and pH-sensitive fluorescence. Protein conjugates prepared with FITC-xtra are far superior compared to the corresponding FITC conjugates. FITC-xtra conjugates are significantly brighter than FITC conjugates and are much more photostable. Additionally, the fluorescence of FITC-xtra is not affected by pH (4-10). This pH insensitivity is a major improvement over FITC, which emits its maximum fluorescence only at pH above 9. FITC-xtra has spectral properties almost identical FITC. In addition, FITC-xtra give much higher conjugation yield under mild conjugation conditions than FITC. Like 5-FITC, FITC-xtra antibody conjugates have excitation ideally suited to the 488 nm laser line, making them alternatives to the corresponding FITC-labeled antibody conjugates. Under the same conditions tested, FITC-xtra antibody conjugates give much higher signal/background ratios than the corresponding FITC-labeled conjugates.
Calculators
Common stock solution preparation
Table 1. Volume of DMSO needed to reconstitute specific mass of FITC-xtra to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.
0.1 mg | 0.5 mg | 1 mg | 5 mg | 10 mg | |
1 mM | 161.155 µL | 805.776 µL | 1.612 mL | 8.058 mL | 16.116 mL |
5 mM | 32.231 µL | 161.155 µL | 322.31 µL | 1.612 mL | 3.223 mL |
10 mM | 16.116 µL | 80.578 µL | 161.155 µL | 805.776 µL | 1.612 mL |
Molarity calculator
Enter any two values (mass, volume, concentration) to calculate the third.
Mass (Calculate) | Molecular weight | Volume (Calculate) | Concentration (Calculate) | Moles | ||||
/ | = | x | = |
Product Family
Name | Excitation (nm) | Emission (nm) | Extinction coefficient (cm -1 M -1) | Quantum yield | Correction Factor (280 nm) |
5-FITC [Fluorescein-5-isothiocyanate] *CAS 3326-32-7* | 491 | 516 | 73000 | 0.92 | 0.35 |
Images

Figure 1. HeLa cells were incubated with (Tubulin+) or without (Tubulin-) mouse anti-tubulin and biotin goat anti-mouse IgG followed by FITC-Xtra streptavidin conjugate (Green, Left) or FITC-streptavidin conjugate (Green, Right), respectively. Cell nuclei were stained with Hoechst 33342 (Blue, Cat#17530).
Citations
View all 3 citations: Citation Explorer
Determination of sodium benzoate in food products by fluorescence polarization immunoassay
Authors: Ren, Linlin and Meng, Meng and Wang, Peng and Xu, Zhihuan and Eremin, Sergei A and Zhao, Junhong and Yin, Yongmei and Xi, Rimo
Journal: Talanta (2014): 136--143
Authors: Ren, Linlin and Meng, Meng and Wang, Peng and Xu, Zhihuan and Eremin, Sergei A and Zhao, Junhong and Yin, Yongmei and Xi, Rimo
Journal: Talanta (2014): 136--143
Complexes containing cationic and anionic pH-sensitive liposomes: comparative study of factors influencing plasmid DNA gene delivery to tumors
Authors: Chen, Yan and Sun, Ji and Lu, Ying and Tao, Chun and Huang, Jingbin and Zhang, He and Yu, Yuan and Zou, Hao and Gao, Jing and Zhong, Yanqiang
Journal: International journal of nanomedicine (2013): 1573
Authors: Chen, Yan and Sun, Ji and Lu, Ying and Tao, Chun and Huang, Jingbin and Zhang, He and Yu, Yuan and Zou, Hao and Gao, Jing and Zhong, Yanqiang
Journal: International journal of nanomedicine (2013): 1573
Swimming behavior of the monotrichous bacterium Pseudomonas fluorescens SBW25
Authors: Ping, Liyan and Birkenbeil, Jan and Monajembashi, Shamci
Journal: FEMS microbiology ecology (2013): 36--44
Authors: Ping, Liyan and Birkenbeil, Jan and Monajembashi, Shamci
Journal: FEMS microbiology ecology (2013): 36--44
References
View all 103 references: Citation Explorer
Isothiocyanato Boron Dipyrromethenes - The First BODIPY Analogues of Fluorescein Isothiocyanate (FITC)
Authors: Malatesti N, Hudson R, Smith K, Savoie H, Rix K, Welham K, Boyle RW.
Journal: Photochem Photobiol. (2006)
Authors: Malatesti N, Hudson R, Smith K, Savoie H, Rix K, Welham K, Boyle RW.
Journal: Photochem Photobiol. (2006)
Detection of FITC-cortisol via modulated supraparticle lighthouses
Authors: Petkus MM, McLauchlin M, Vuppu AK, Rios L, Garcia AA, Hayes MA.
Journal: Anal Chem (2006): 1405
Authors: Petkus MM, McLauchlin M, Vuppu AK, Rios L, Garcia AA, Hayes MA.
Journal: Anal Chem (2006): 1405
Clathrin-mediated endocytosis of FITC-albumin in alveolar type II epithelial cell line RLE-6TN
Authors: Yumoto R, Nishikawa H, Okamoto M, Katayama H, Nagai J, Takano M.
Journal: Am J Physiol Lung Cell Mol Physiol (2006): L946
Authors: Yumoto R, Nishikawa H, Okamoto M, Katayama H, Nagai J, Takano M.
Journal: Am J Physiol Lung Cell Mol Physiol (2006): L946
Fluorescein isothiocyanate labelled bovine serum albumin (FITC-BSA) as a model protein drug: opportunities and drawbacks
Authors: Wischke C, Borchert HH.
Journal: Pharmazie (2006): 770
Authors: Wischke C, Borchert HH.
Journal: Pharmazie (2006): 770
Increased FITC fluorescence on LPS stimulated neutrophils cultured in whole blood
Authors: Wilkins RC, Bellier PV, Kutzner BC, McNamee JP.
Journal: Cell Biol Int (2006): 394
Authors: Wilkins RC, Bellier PV, Kutzner BC, McNamee JP.
Journal: Cell Biol Int (2006): 394
Effects of pretreatment of needle puncture and sandpaper abrasion on the in vitro skin permeation of fluorescein isothiocyanate (FITC)-dextran
Authors: Wu XM, Todo H, Sugibayashi K.
Journal: Int J Pharm (2006): 102
Authors: Wu XM, Todo H, Sugibayashi K.
Journal: Int J Pharm (2006): 102
Uptake of dextran-FITC by epithelial cells of the chorioallantoic placentome and the omphalopleure of the placentotrophic lizard, Pseudemoia entrecasteauxii
Authors: Stewart JR, Thompson MB, Attaway MB, Herbert JF, Murphy CR.
Journal: J Exp Zoolog A Comp Exp Biol (2006): 883
Authors: Stewart JR, Thompson MB, Attaway MB, Herbert JF, Murphy CR.
Journal: J Exp Zoolog A Comp Exp Biol (2006): 883
Intracellular FITC-derivatization with PEG
Authors: Chen F, Zhi D, Xia G.
Journal: Electrophoresis (2005): 4204
Authors: Chen F, Zhi D, Xia G.
Journal: Electrophoresis (2005): 4204
Potential determination of aminated pesticides and metabolites by cyclodextrin capillary electrophoresis-laser-induced fluorescence using FITC as labelling
Authors: Navarrete-Casas M, Segura-Carretero A, Cruces-Blanco C, Fern and ez-Gutierrez A., undefined
Journal: Pest Manag Sci (2005): 197
Authors: Navarrete-Casas M, Segura-Carretero A, Cruces-Blanco C, Fern and ez-Gutierrez A., undefined
Journal: Pest Manag Sci (2005): 197
Preparation and characterization of a directly labeled mouse anti-human CD14 monoclonal antibody ZCH-2F9-FITC.
Authors: Ning BT, Tang YM, Shen HQ, Yang SL, Chen YH, Song H, Shi SW, Qian BQ, Xu WQ.
Journal: Zhejiang Da Xue Xue Bao Yi Xue Ban (2005): 167
Authors: Ning BT, Tang YM, Shen HQ, Yang SL, Chen YH, Song H, Shi SW, Qian BQ, Xu WQ.
Journal: Zhejiang Da Xue Xue Bao Yi Xue Ban (2005): 167
Application notes
Abbreviation of Common Chemical Compounds Related to Peptides
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A Comparison of Fluorescent Red Calcium Indicators for Detecting Intracellular Calcium Mobilization in CHO Cells
A Meta-Analysis of Common Calcium Indicators
A New Protein Crosslinking Method for Labeling and Modifying Antibodies
A New Red Fluorescent & Robust Screen Quest™ Rhod-4™ Ca2+Indicator for Screening GPCR & Ca2+ Channel Targets