iFluor® 647 TCO
Ordering information
Price | |
Catalog Number | |
Unit Size | |
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Additional ordering information
Telephone | 1-800-990-8053 |
Fax | 1-800-609-2943 |
sales@aatbio.com | |
Quotation | Request |
International | See distributors |
Shipping | Standard overnight for United States, inquire for international |
Physical properties
Molecular weight | 1181.33 |
Solvent | DMSO |
Spectral properties
Correction Factor (260 nm) | 0.03 |
Correction Factor (280 nm) | 0.03 |
Correction Factor (656 nm) | 0.0793 |
Extinction coefficient (cm -1 M -1) | 2500001 |
Excitation (nm) | 656 |
Emission (nm) | 670 |
Quantum yield | 0.251 |
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: Antibodies and Proteomics, Antibody and Protein Labeling, Bioconjugation, iFluor® Dyes and Kits
Molecular weight 1181.33 | Correction Factor (260 nm) 0.03 | Correction Factor (280 nm) 0.03 | Correction Factor (656 nm) 0.0793 | Extinction coefficient (cm -1 M -1) 2500001 | Excitation (nm) 656 | Emission (nm) 670 | Quantum yield 0.251 |
The tetrazine-trans-cyclooctene (TCO) ligation constitutes a non-toxic biomolecule labeling method of unparalleled speed. A tetrazine-functionalized molecule reacts with a TCO-functionalized molecule, forming a stable conjugate via a dihydropyrazine moiety. This has gained popularity due to its extremely fast kinetics. AAT Bioquest offers a group of tetrazine- and TCO-containing dyes for exploring various biological systems that can use this powerful click reaction. iFluor® 647-TCO can be readily used to label tetrazine-modified biological molecules for fluorescence imaging and other fluorescence-based biological applications. The conjugates prepared with iFluor® 647 dye have spectral properties almost identical to the popular Cy5 and Alexa Fluor® 647. In most cases, antibody conjugates prepared with iFluor® 647 tend to have a higher signal/background ratio than the spectrally similar dye conjugates, such as Cy5 and Alexa Fluor® 647 (Alexa Fluor® is the trademark of Invitrogen).
Calculators
Common stock solution preparation
Table 1. Volume of DMSO needed to reconstitute specific mass of iFluor® 647 TCO 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 | 84.65 µL | 423.252 µL | 846.504 µL | 4.233 mL | 8.465 mL |
5 mM | 16.93 µL | 84.65 µL | 169.301 µL | 846.504 µL | 1.693 mL |
10 mM | 8.465 µL | 42.325 µL | 84.65 µL | 423.252 µL | 846.504 µL |
Molarity calculator
Enter any two values (mass, volume, concentration) to calculate the third.
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Spectrum
Open in Advanced Spectrum Viewer


Spectral properties
Correction Factor (260 nm) | 0.03 |
Correction Factor (280 nm) | 0.03 |
Correction Factor (656 nm) | 0.0793 |
Extinction coefficient (cm -1 M -1) | 2500001 |
Excitation (nm) | 656 |
Emission (nm) | 670 |
Quantum yield | 0.251 |
Product Family
Name | Excitation (nm) | Emission (nm) | Extinction coefficient (cm -1 M -1) | Quantum yield | Correction Factor (260 nm) | Correction Factor (280 nm) | Correction Factor (656 nm) |
iFluor® 647 maleimide | 656 | 670 | 2500001 | 0.251 | 0.03 | 0.03 | 0.0793 |
iFluor® 647 amine | 656 | 670 | 2500001 | 0.251 | 0.03 | 0.03 | 0.0793 |
iFluor® 647 hydrazide | 656 | 670 | 2500001 | 0.251 | 0.03 | 0.03 | 0.0793 |
iFluor® 647 alkyne | 656 | 670 | 2500001 | 0.251 | 0.03 | 0.03 | 0.0793 |
iFluor® 647 azide | 656 | 670 | 2500001 | 0.251 | 0.03 | 0.03 | 0.0793 |
iFluor® 647 Styramide *Superior Replacement for Alexa Fluor 647 tyramide* | 656 | 670 | 2500001 | 0.251 | 0.03 | 0.03 | 0.0793 |
iFluor® 647 Tyramide | 656 | 670 | 2500001 | 0.251 | 0.03 | 0.03 | 0.0793 |
iFluor® 488 TCO | 491 | 516 | 750001 | 0.91 | 0.21 | 0.11 | - |
iFluor® 555 TCO | 557 | 570 | 1000001 | 0.641 | 0.23 | 0.14 | - |
Show More (2) |
Images

Figure 1. The tetrazine-trans-cyclooctene (TCO) ligation constitutes a non-toxic biomolecule labeling method of unparalleled speed. A tetrazine-functionalized molecule reacts with a TCO-functionalized molecule, forming a stable conjugate via a dihydropyrazine moiety. This has gained popularity due to its extremely fast kinetics. iFluor® 647-TCO can be readily used to label tetrazine-modified biological molecules for fluorescence imaging and other fluorescence-based biochemical analysis.
Citations
View all 7 citations: Citation Explorer
Immune-regulating bimetallic metal-organic framework nanoparticles designed for cancer immunotherapy
Authors: Dai, Zan and Wang, Qiaoyun and Tang, Jie and Wu, Min and Li, Haoze and Yang, Yannan and Zhen, Xu and Yu, Chengzhong
Journal: Biomaterials (2022): 121261
Authors: Dai, Zan and Wang, Qiaoyun and Tang, Jie and Wu, Min and Li, Haoze and Yang, Yannan and Zhen, Xu and Yu, Chengzhong
Journal: Biomaterials (2022): 121261
Site-specific labeling and functional efficiencies of human fibroblast growth Factor-1 with a range of fluorescent Dyes in the flexible N-Terminal region and a rigid $\beta$-turn region
Authors: Mohale, Mamello and Gundampati, Ravi Kumar and Kumar, Thallapuranam Krishnaswamy Suresh and Heyes, Colin D
Journal: Analytical biochemistry (2022): 114524
Authors: Mohale, Mamello and Gundampati, Ravi Kumar and Kumar, Thallapuranam Krishnaswamy Suresh and Heyes, Colin D
Journal: Analytical biochemistry (2022): 114524
SP/NK-1R Axis Promotes Perineural Invasion of Pancreatic Cancer and is Affected by lncRNA LOC389641
Authors: Ji, Tengfei and Ma, Keqiang and Wu, Hongsheng and Cao, Tiansheng
Journal: (2021)
Authors: Ji, Tengfei and Ma, Keqiang and Wu, Hongsheng and Cao, Tiansheng
Journal: (2021)
Efferocytosis induces macrophage proliferation to help resolve tissue injury
Authors: Gerlach, Brennan D and Ampomah, Patrick B and Yurdagul Jr, Arif and Liu, Chuang and Lauring, Max C and Wang, Xiaobo and Kasikara, Canan and Kong, Na and Shi, Jinjun and Tao, Wei and others,
Journal: Cell metabolism (2021): 2445--2463
Authors: Gerlach, Brennan D and Ampomah, Patrick B and Yurdagul Jr, Arif and Liu, Chuang and Lauring, Max C and Wang, Xiaobo and Kasikara, Canan and Kong, Na and Shi, Jinjun and Tao, Wei and others,
Journal: Cell metabolism (2021): 2445--2463
Enrichment of NPC1-deficient cells with the lipid LBPA stimulates autophagy, improves lysosomal function, and reduces cholesterol storage
Authors: Ilnytska, Olga and Lai, Kimberly and Gorshkov, Kirill and Schultz, Mark L and Tran, Bruce Nguyen and Jeziorek, Maciej and Kunkel, Thaddeus J and Azaria, Ruth D and McLoughlin, Hayley S and Waghalter, Miriam and others,
Journal: Journal of Biological Chemistry (2021)
Authors: Ilnytska, Olga and Lai, Kimberly and Gorshkov, Kirill and Schultz, Mark L and Tran, Bruce Nguyen and Jeziorek, Maciej and Kunkel, Thaddeus J and Azaria, Ruth D and McLoughlin, Hayley S and Waghalter, Miriam and others,
Journal: Journal of Biological Chemistry (2021)
Pharmacological targeting of Sam68 functions in colorectal cancer stem cells
Authors: Masibag, Angelique N and Bergin, Christopher J and Haebe, Joshua R and Zouggar, A{\"\i}cha and Shah, Muhammad S and Sandouka, Tamara and da Silva, Amanda Mendes and Desrochers, Fran{\c{c}}ois M and Fournier-Morin, Aube and Benoit, Yannick D
Journal: Iscience (2021): 103442
Authors: Masibag, Angelique N and Bergin, Christopher J and Haebe, Joshua R and Zouggar, A{\"\i}cha and Shah, Muhammad S and Sandouka, Tamara and da Silva, Amanda Mendes and Desrochers, Fran{\c{c}}ois M and Fournier-Morin, Aube and Benoit, Yannick D
Journal: Iscience (2021): 103442
Influence of particle geometry on gastrointestinal transit and absorption following oral administration
Authors: Li, Dong and Zhuang, Jie and He, Haisheng and Jiang, Sifan and Banerjee, Amrita and Lu, Yi and Wu, Wei and Mitragotri, Samir and Gan, Li and Qi, Jianping
Journal: ACS applied materials \& interfaces (2017): 42492--42502
Authors: Li, Dong and Zhuang, Jie and He, Haisheng and Jiang, Sifan and Banerjee, Amrita and Lu, Yi and Wu, Wei and Mitragotri, Samir and Gan, Li and Qi, Jianping
Journal: ACS applied materials \& interfaces (2017): 42492--42502
References
View all 50 references: Citation Explorer
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Authors: Wu, Xunshen and Wu, Kui and Gaye, Fatima and Royzen, Maksim
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