FAM DBCO, 6-isomer

FAM (Fluorescein) Cycloalkynes Copper-free click chemistry

Cat. #	Quantity	Price	Lead time
151F0	1 mg	$110	in stock
251F0	5 mg	$160	in stock
451F0	25 mg	$260	in stock
551F0	50 mg	$370	in stock
651F0	100 mg	$525	in stock

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Fluorescein (FAM) is one of the oldest yet well-known fluorescent dyes. This derivative of FAM contains the cyclooctyne group (dibenzocyclooctyne, DBCO or ADIBO). Pure 6-isomer. DBCO reacts quickly and efficiently with azides by simply mixing the components without the need for a copper catalyst (so-called sterically promoted cycloaddition reaction or SPAAC).

FAM DBCO can be used for the labeling of proteins, peptides, nucleic acids, and other molecules containing azide groups. Fluorescein can be detected using a variety of different instruments.

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Absorption and emission spectra of FAM

General properties

Appearance:	orange solid
Molecular weight:	676.71
Molecular formula:	C₄₂H₃₂N₂O₇
Solubility:	good in DMF, DMSO
Quality control:	NMR ¹H, HPLC-MS (95%)
Storage conditions:	Storage: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.
MSDS:	Download
	Product specifications

Spectral properties

Excitation/absorption maximum, nm:	492
ε, L⋅mol⁻¹⋅cm⁻¹:	74000
Emission maximum, nm:	517
Fluorescence quantum yield:	0.93

Product citations

Kaneda, K.; Takeuchi, Y.; Yamanaka, K.; Hasebe, F.; Maruyama, C.; Hamano, Y. Cell-penetrating activity of a short-chain ε-poly-l-α-lysine. Journal of Bioscience and Bioengineering, 2024, 138(3), 249-253. doi: 10.1016/j.jbiosc.2024.06.006
Wu, F.; Ren, Y.; Lv, W.; Liu, X.; Wang, X.; Wang, C.; Cao, Z.; Liu, J.; Wei, J.; Pang, Y. Generating dual structurally and functionally skin-mimicking hydrogels by crosslinking cell-membrane compartments. Nature Communications, 2024, 15(1), 802. doi: 10.1038/s41467-024-45006-7
Jaiswal, M.; Tran, T. T.; Guo, J.; Zhou, M.; Kundu, S.; Guo, Z.; Fanucci, G. E. Spin-Labeling Insights into How Chemical Fixation Impacts Glycan Organization on Cells. Appl Magn Reson, 2023. doi: 10.1007/s00723-023-01624-w
Sapozhnikova, K. A.; Gulyak, E. L.; Misyurin, V. A.; Simonova, M. A.; Ryabukhina, E. V.; Alexeeva, A. V.; Tikhonova, N. A.; Lyzhko, N. A.; Popova, G. P.; Misyurin, A. V.; Ustinov, A. V.; Korshun, V. A.; Alferova, V. A.; Ryazantsev, D. Y.; Brylev, V. A. Branched Linkers for Site-Specific Fluorescent Labeling of Antibodies. Molecules, 2023, 28(1), 425. doi: 10.3390/molecules28010425

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Product is offered and sold for research purposes only. Product is not tested for safety and efficacy in food, drug, medical device, cosmetic, no express or implied authorization to use for any other purpose, including, without limitation, in vitro diagnostic purposes, for humans or animals or for commercial purposes.