iFluor® 488 amine
| Overview |  SDSProtocol |
See also: Chemical Reagents, Dyes by Functional Group
Molecular weight 805.61 | Correction Factor (260 nm) 0.21 | Correction Factor (280 nm) 0.11 | Extinction coefficient (cm -1 M -1) 750001 | Excitation (nm) 491 | Emission (nm) 516 | Quantum yield 0.91 |
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 iFluor® 488 dyes are far superior compared to conjugates of fluorescein derivatives such as FITC. iFluor® 488 conjugates are significantly brighter than fluorescein conjugates and are much more photostable. Additionally, the fluorescence of iFluor® 488 is not affected by pH (4-10). This pH insensitivity is a major improvement over fluorescein, which emits its maximum fluorescence only at pH above 9. iFluor® 488 amine is stable and used for modifying carbonyl groups (e.g., aldehyde and carboxy groups).
Calculators
Common stock solution preparation
Table 1. Volume of DMSO needed to reconstitute specific mass of iFluor® 488 amine 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 | 124.13 µL | 620.648 µL | 1.241 mL | 6.206 mL | 12.413 mL |
| 5 mM | 24.826 µL | 124.13 µL | 248.259 µL | 1.241 mL | 2.483 mL |
| 10 mM | 12.413 µL | 62.065 µL | 124.13 µL | 620.648 µL | 1.241 mL |
Molarity calculator
Enter any two values (mass, volume, concentration) to calculate the third.
| Mass (Calculate) | Molecular weight | Volume (Calculate) | Concentration (Calculate) | Moles | ||||
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Spectrum
Open in Advanced Spectrum Viewer
Spectral properties
| Correction Factor (260 nm) | 0.21 |
| Correction Factor (280 nm) | 0.11 |
| Extinction coefficient (cm -1 M -1) | 750001 |
| Excitation (nm) | 491 |
| Emission (nm) | 516 |
| Quantum yield | 0.91 |
Images
Figure 1. Fluorescent dye amines are the most popular tool for conjugating dyes to a target compound with a carbonyl group (e.g., aldehyde, carboxylic acid or activated carboxy group such as NHS ester).
Citations
View all 5 citations: Citation Explorer
CD95/Fas protects triple negative breast cancer from anti-tumor activity of NK cells
Authors: Qadir, Abdul S and Gu{\'e}gan, Jean Philippe and Ginestier, Christophe and Chaibi, Assia and Bessede, Alban and Charafe-Jauffret, Emmanuelle and Macario, Manon and Lavou{\'e}, Vincent and de la Motte Rouge, Thibault and Law, Calvin and others,
Journal: Iscience (2021): 103348
Authors: Qadir, Abdul S and Gu{\'e}gan, Jean Philippe and Ginestier, Christophe and Chaibi, Assia and Bessede, Alban and Charafe-Jauffret, Emmanuelle and Macario, Manon and Lavou{\'e}, Vincent and de la Motte Rouge, Thibault and Law, Calvin and others,
Journal: Iscience (2021): 103348
A versatile adeno-associated viral vector cross-linking platform capable of tuning cellular tropisms and simultaneously inducing solid-phase gene delivery
Authors: Yoo, Seungju and Kang, Byunguk and Oh, Seokmin and Kim, Yunha and Jang, Jae-Hyung
Journal: ACS Applied Bio Materials (2020): 4847--4857
Authors: Yoo, Seungju and Kang, Byunguk and Oh, Seokmin and Kim, Yunha and Jang, Jae-Hyung
Journal: ACS Applied Bio Materials (2020): 4847--4857
Deep Sequencing Analysis of the Eha-Regulated Transcriptome of Edwardsiella tarda Following Acidification
Authors: Gao, D and Liu, N and Li, Y and Zhang, Y and Liu, G and others, undefined
Journal: Metabolomics (Los Angel) (2017): 2153--0769
Authors: Gao, D and Liu, N and Li, Y and Zhang, Y and Liu, G and others, undefined
Journal: Metabolomics (Los Angel) (2017): 2153--0769
Suramin inhibits cullin-RING E3 ubiquitin ligases
Authors: Wu, Kenneth and Chong, Robert A and Yu, Qing and Bai, Jin and Spratt, Donald E and Ching, Kevin and Lee, Chan and Miao, Haibin and Tappin, Inger and Hurwitz, Jerard and others, undefined
Journal: Proceedings of the National Academy of Sciences (2016): E2011--E2018
Authors: Wu, Kenneth and Chong, Robert A and Yu, Qing and Bai, Jin and Spratt, Donald E and Ching, Kevin and Lee, Chan and Miao, Haibin and Tappin, Inger and Hurwitz, Jerard and others, undefined
Journal: Proceedings of the National Academy of Sciences (2016): E2011--E2018
Glycosaminoglycan mimicry by COAM reduces melanoma growth through chemokine induction and function
Authors: Piccard, Helene and Berghmans, Nele and Korpos, Eva and Dillen, Chris and Aelst, Ilse Van and Li, S and ra , undefined and Martens, Erik and Liekens, S and ra , undefined and Noppen, Sam and Damme, Jo Van and others, undefined
Journal: International Journal of Cancer (2012): E425--E436
Authors: Piccard, Helene and Berghmans, Nele and Korpos, Eva and Dillen, Chris and Aelst, Ilse Van and Li, S and ra , undefined and Martens, Erik and Liekens, S and ra , undefined and Noppen, Sam and Damme, Jo Van and others, undefined
Journal: International Journal of Cancer (2012): E425--E436
References
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Journal: Biochem Biophys Res Commun (2011): 211
Neuroanatomical basis of clinical joint application of "Jinggu" (BL 64, a source-acupoint) and "Dazhong" (KI 4, a Luo-acupoint) in the rat: a double-labeling study of cholera toxin subunit B conjugated with Alexa Fluor 488 and 594
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Journal: Zhen Ci Yan Jiu (2011): 262
Simultaneous detection of virulence factors from a colony in diarrheagenic Escherichia coli by a multiplex PCR assay with Alexa Fluor-labeled primers
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Alexa Fluor 546-ArIB[V11L;V16A] is a potent ligand for selectively labeling alpha 7 nicotinic acetylcholine receptors
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Neuroanatomical characteristics of acupoint "Chengshan" (BL 57) in the rat: a cholera toxin subunit B conjugated with Alexa Fluor 488 method study
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Novel Alexa Fluor-488 labeled antagonist of the A(2A) adenosine receptor: Application to a fluorescence polarization-based receptor binding assay
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