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AAT Bioquest

FastClick™ XFD350 Azide

FastClick™ XFD350 Azide contains both the CAG moiety of FastClick (for assisting click efficiency) and Alexa Fluor® 350 fluorophore (as the fluorescence tag) for developing Alexa Fluor® 350-based fluorescent probes. Alexa Fluor® 350 is a commonly used blue fluorophore for labeling proteins, nucleic acids, or other biomolecules. It has moderate photostability and excitation that matches the 350 nm laser line. Alexa Fluor® is a trademark of ThermoFisher Scientific. FastClick™ reagents have been developed by the scientists of AAT Bioquest for enhancing the yield and reaction speed of copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction. They contain a copper-chelating ligand that significantly stabilizes the Cu(I) oxidation state and thus accelerates the click reaction. They do not require the use of an external copper-chelator (such as the common THPTA or BTTAA). The high concentration of copper chelators is known to have a detrimental effect on DNA/RNA, thus causing biocompatibility issues. The introduction of a copper-chelating moiety at the reporter molecule allows for a dramatic raise of the effective Cu(I) concentration at the reaction site and thus accelerates the reaction. Under extremely mild conditions the FastClick™ azides and alkynes react much faster in high yield compared to the corresponding conventional CuAAC reactions. Click chemistry was developed by K. Barry Sharpless as a robust and specific method of ligating two molecules together. Two important characteristics make click chemistry attractive for assembling biomolecules. First, click reactions are bio-orthogonal, thus the click chemistry-functionalized biomolecules would not react with the natural biomolecules that lack a clickable functional group. Second, the reactions proceed with ease under mild conditions, such as at room temperature and in aqueous media.

Spectrum

Product family

NameExcitation (nm)Emission (nm)Extinction coefficient (cm -1 M -1)Quantum yieldCorrection Factor (260 nm)Correction Factor (280 nm)
FastClick™ Cy3 Azide55556915000010.1510.070.073
FastClick™ Cy5 Azide65167025000010.271, 0.420.020.03
FastClick™ Cy7 Azide7567792500000.30.050.036
FastClick™ XFD488 Azide499520710000.9210.300.11
FastClick™ XFD555 Azide5535681500000.110.080.08
FastClick™ XFD647 Azide6506712390000.3310.000.03
FastClick™ XFD750 Azide7527762400000.1210.000.04

References

View all 46 references: Citation Explorer
Click-Functionalization of Silanized Carbon Nanotubes: From Inorganic Heterostructures to Biosensing Nanohybrids.
Authors: Manoharan, Gririraj and Bösel, Petra and Thien, Jannis and Holtmannspötter, Michael and Meingast, Laura and Schmidt, Mercedes and Eickmeier, Henning and Haase, Markus and Maultzsch, Janina and Steinhart, Martin and Wollschläger, Joachim and Palma, Matteo and Meyer, Carola
Journal: Molecules (Basel, Switzerland) (2023)
Click-iT ® Plus OPP Alexa Fluor ® Protein Synthesis Assay in Embryonic Cells.
Authors: Li, Yan and Ji, Xu and Chang, Lu and Tang, Jianan and Hua, Min-Min and Liu, Jing and O'Neill, Christopher and Huang, Xuefeng and Jin, Xingliang
Journal: Bio-protocol (2022): e4441
Recyclable cell-surface chemical tags for repetitive cancer targeting.
Authors: Bhatta, Rimsha and Han, Joonsu and Zhou, Jingyi and Li, Haoyu and Wang, Hua
Journal: Journal of controlled release : official journal of the Controlled Release Society (2022): 164-174
Protocol for visualizing newly synthesized proteins in primary mouse hepatocytes.
Authors: Shen, Yuqian and Liu, Wenhua and Zuo, Jian and Han, Junhai and Zhang, Zi Chao
Journal: STAR protocols (2021): 100616
EdU Incorporation To Assess Cell Proliferation and Drug Susceptibility in Naegleria fowleri.
Authors: Troth, Emma V and Kyle, Dennis E
Journal: Antimicrobial agents and chemotherapy (2021): e0001721
Page updated on October 4, 2024

Ordering information

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Catalog Number72730
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Physical properties

Molecular weight

525.54

Solvent

DMSO

Spectral properties

Correction Factor (260 nm)

0.25

Correction Factor (280 nm)

0.19

Extinction coefficient (cm -1 M -1)

19000

Excitation (nm)

343

Emission (nm)

441

Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22

Storage

Freeze (< -15 °C); Minimize light exposure
Product Image
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Gallery Image 1
The reaction (Green Bar) of FastClick Cy5 Azide with coumarin alkyne occurs under extremely mild conditions (e.g., [Azide] = 0.02 mM, [Alkyne] = 0.02 mM, [CuSO4] = 0.02 mM, [Sodium Ascorbate] = 5 mM, in 100 mM HEPES) under which the common Cy5 azide does not effectively react with the coumarin alkyne substrate.

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