iFluor® 647 Tetrazine

Name: iFluor® 647 Tetrazine
Brand: AAT Bioquest
SKU: 1019
Price: 221 USD
Availability: InStock

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 tetrazine can be readily used to label TCO-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).

Spectrum

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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® 488 Tetrazine	491	516	75000¹	0.9¹	0.21	0.11	-
iFluor® 555 Tetrazine	557	570	100000¹	0.64¹	0.23	0.14	-
iFluor® 594 Tetrazine	587	603	200000¹	0.53¹	0.05	0.04	-
iFluor® 647 acid	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 amine	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 hydrazide	656	670	250000¹	0.25¹	0.03	0.03	0.0793
iFluor® 647 maleimide	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 TCO	656	670	250000¹	0.25¹	0.03	0.03	0.0793
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Citations

View all 9 citations: Citation Explorer

The tandem CD33-CLL1 CAR-T as an approach to treat acute myeloid leukemia: The tandem CLL1/CD33 CAR-T to treat AML
Authors: Wang, Huiru and Feng, Shanglong and Zhu, Yanliang and Zhang, Yafeng and Zhou, Ziwei and Nian, Zhigang and Lu, Xueqin and Peng, Peng and Wu, Shu and Zhou, Li
Journal: Blood Transfusion (2024)

Digital Light Processing 3D Printing of Gyroid Scaffold with Isosorbide-Based Photopolymer for Bone Tissue Engineering
Authors: Verisqa, Fiona and Cha, Jae-Ryung and Nguyen, Linh and Kim, Hae-Won and Knowles, Jonathan C
Journal: Biomolecules (2022): 1692

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

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

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)

References

View all 4 references: Citation Explorer

A Self-Evaluating Photothermal Therapeutic Nanoparticle.
Authors: Wang, Yanfang and Du, Wei and Zhang, Tong and Zhu, Yu and Ni, Yanhan and Wang, Chenchen and Sierra Raya, Fatima Maria and Zou, Liwei and Wang, Longsheng and Liang, Gaolin
Journal: ACS nano (2020)

Modulation of Mitochondriotropic Properties of Cyanine Dyes by in Organello Copper-Free Click Reaction.
Authors: Negwer, Inka and Hirsch, Markus and Kaloyanova, Stefka and Brown, Tom and Peneva, Kalina and Butt, Hans-Jürgen and Koynov, Kaloian and Helm, Mark
Journal: Chembiochem : a European journal of chemical biology (2017): 1814-1818

Size-matched alkyne-conjugated cyanine fluorophores to identify differences in protein glycosylation.
Authors: Burnham-Marusich, Amanda R and Plechaty, Anna M and Berninsone, Patricia M
Journal: Electrophoresis (2014): 2621-5

Application of a Double Aza-Michael Reaction in a 'Click, Click, Cy-Click' Strategy: From Bench to Flow.
Authors: Zang, Qin and Javed, Salim and Ullah, Farman and Zhou, Aihua and Knudtson, Christopher A and Bi, Danse and Basha, Fatima Z and Organ, Michael G and Hanson, Paul R
Journal: Synthesis (2011): 2743-2750

Page updated on May 19, 2025

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Catalog Number	1019
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Telephone	1-800-990-8053
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Physical properties

Molecular weight	1272.44
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