iFluor® 647 hydrazide

AAT Bioquest's iFluor® dyes are optimized for labeling proteins, particularly antibodies. These dyes are bright, photostable, and have minimal quenching on proteins. They can be well excited by the major laser lines of fluorescence instruments (e.g., 350, 405, 488, 555, and 633 nm). iFluor® 647 dyes have fluorescence excitation and emission maxima of ~656 nm and ~670 nm respectively. The iFluor® 647 family has spectral properties essentially identical to those of Cy5®. Compared to Cy5® probes, iFluor® 647 reagents have much stronger fluorescence and higher photostability. Their fluorescence is pH-independent from pH 3 to 11. These spectral characteristics make this new dye family an excellent alternative to Cy5® and Alexa Fluor® 647 (Cy5® and Alexa Fluor® are the trademarks of GE Health Care and Invitrogen). iFluor® 647 hydrazide is reasonably stable and shows good reactivity and selectivity with a carbonyl group (such as aldehyde).

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)
iFluor® 350 hydrazide	345	450	20000¹	0.95¹	0.83	0.23
iFluor® 488 hydrazide	491	516	75000¹	0.9¹	0.21	0.11
iFluor® 555 hydrazide	557	570	100000¹	0.64¹	0.23	0.14
iFluor® 680 hydrazide	684	701	220000¹	0.23¹	0.097	0.094
iFluor® 700 hydrazide	690	713	220000¹	0.23¹	0.09	0.04
iFluor® 750 hydrazide	757	779	275000¹	0.12¹	0.044	0.039
iFluor® 790 hydrazide	787	812	250000¹	0.13¹	0.1	0.09
iFluor® 405 hydrazide	403	427	37000¹	0.91¹	0.48	0.77
iFluor® 647 Styramide Superior Replacement for Alexa Fluor 647 tyramide	656	670	250000¹	0.25¹	0.03	0.03
iFluor® 647 Tyramide	656	670	250000¹	0.25¹	0.03	0.03
iFluor® 647 TCO	656	670	250000¹	0.25¹	0.03	0.03
iFluor® 647 Tetrazine	656	670	250000¹	0.25¹	0.03	0.03
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Citations

View all 27 citations: Citation Explorer

A multistage drug delivery approach for colorectal primary tumors and lymph node metastases
Authors: Yuan, Yihang and Lin, Quanjun and Feng, Hai-Yi and Zhang, Yunpeng and Lai, Xing and Zhu, Mao-Hua and Wang, Jue and Shi, Jiangpei and Huang, Yanhu and Zhang, Lele and others,
Journal: Nature Communications (2025): 1439

Highly potent novel multi-armoured IL13R$\alpha$2 CAR-T subverts the immunosuppressive microenvironment of Glioblastoma
Authors: Mangolini, Maurizio and Srivastava, Saket and Souster, Emily and Yang, Yajing and Wang, Huimin and Karattil, Rajesh and Schultz, Liam and Ma, Biao and Pombal, Diana and Greenig, Matthew and others,
Journal: bioRxiv (2025): 2025--01

Circ\_001653 alleviates sepsis associated-acute kidney injury by recruiting BUD13 to regulate KEAP1/NRF2/HO-1 signaling pathway
Authors: Li, Xinxin and Zhou, Wei and Chen, Jianjun and Zhou, Liangliang and Li, Yingbing and Wu, Xufeng and Peng, Xia
Journal: Journal of Inflammation (2024): 1--13

Novel immunogenic cell death inducer combined with autophagy inhibitor to amplify photodynamic synergistic immunotherapy for triple-negative breast cancer
Authors: Yuan, Gankun and Yang, Ruyue and Wen, Wenjing and Wei, Zhaoyi and Song, Meiru and Zhang, Lingyang and Hou, Kun and Liang, Gaofeng
Journal: (2024)

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)

References

View all 49 references: Citation Explorer

Sequential ordering among multicolor fluorophores for protein labeling facility via aggregation-elimination based beta-lactam probes
Authors: Sadhu KK, Mizukami S, Watanabe S, Kikuchi K.
Journal: Mol Biosyst (2011): 1766

Visualizing dengue virus through Alexa Fluor labeling
Authors: Zhang S, Tan HC, Ooi EE.
Journal: J Vis Exp. (2011)

Fluorescent "Turn-on" system utilizing a quencher-conjugated peptide for specific protein labeling of living cells
Authors: Arai S, Yoon SI, Murata A, Takabayashi M, Wu X, Lu Y, Takeoka S, Ozaki M.
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
Authors: Cui JJ, Zhu XL, Ji CF, Jing XH, Bai WZ.
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
Authors: Kuwayama M, Shigemoto N, Oohara S, Tanizawa Y, Yamada H, Takeda Y, Matsuo T, Fukuda S.
Journal: J Microbiol Methods (2011): 119

Page updated on February 12, 2025

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Catalog Number	1085
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Physical properties

Molecular weight	~1100
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