iFluor® 647 alkyne

Name: iFluor® 647 alkyne
Brand: AAT Bioquest
SKU: 1090
Price: 232 USD
Availability: InStock

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® (Cy5® is the trademark of GE Healthcare). 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 Invitrogen and GE Health Care). iFluor® 647 alkyne is reasonably stable and shows good reactivity and selectivity with the azido group.

Calculators

Common stock solution preparation

Table 1. Volume of DMSO needed to reconstitute specific mass of iFluor® 647 alkyne 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	110.867 µL	554.336 µL	1.109 mL	5.543 mL	11.087 mL
5 mM	22.173 µL	110.867 µL	221.734 µL	1.109 mL	2.217 mL
10 mM	11.087 µL	55.434 µL	110.867 µL	554.336 µL	1.109 mL

Molarity calculator

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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 alkyne	491	516	75000¹	0.9¹	0.21	0.11	-
iFluor® 555 alkyne	557	570	100000¹	0.64¹	0.23	0.14	-
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
iFluor® 647 Tetrazine	656	670	250000¹	0.25¹	0.03	0.03	0.0793
iFluor® 790 Alkyne	787	812	250000¹	0.13¹	0.1	0.09	-

Citations

View all 26 citations: Citation Explorer

CDH17-targeting CAR-NK cells synergize with CD47 blockade for potent suppression of gastrointestinal cancers
Authors: Zheng, Liuhai and Ding, Youbing and Xu, Xiaolong and Wang, Huifang and Shi, Guangwei and Li, Yang and He, Yuanqiao and Gong, Yue and Zhang, Xiaodong and Wei, Jinxi and others,
Journal: Acta Pharmaceutica Sinica B (2025)

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)

Cryo-shocked tumor cells deliver CRISPR-Cas9 for lung cancer regression by synthetic lethality
Authors: Liu, Feng and Xin, Minhang and Feng, Huiheng and Zhang, Wentao and Liao, Ziyan and Sheng, Tao and Wen, Ping and Wu, Qing and Liang, Tingxizi and Shi, Jiaqi and others,
Journal: Science Advances (2024): eadk8264

References

View all 49 references: Citation Explorer

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

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

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

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

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

Page updated on May 19, 2025

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Catalog Number	1090
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Physical properties

Molecular weight	901.98
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