FAM alkyne, 5-isomer

Cat. # Quantity Price Lead time
A41B0 1 mg $80.00 in stock
B41B0 5 mg $100.00 in stock
C41B0 10 mg $150.00 in stock
D41B0 25 mg $295.00 in stock
E41B0 50 mg $450.00 in stock
F41B0 100 mg $780.00 in stock

FAM (fluorescein) alkyne for copper-catalyzed Click chemistry, high purity (97+%) 5-isomer. The compound possesses significant aqueous solubility.

FAM absorbance and emission spectra

FAM absorbance and emission spectra

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FAM amine, 5-isomer

Amino derivative of fluorescein, pure 5-isomer. Contains a linker arm between the aliphatic amine group, and the fluorophore. Useful for the labeling via enzymatic transamination, for the reactions with electrophilic reagents, and for reductive amination.

Copper(II)-TBTA complex, 10 mM in 55% aq. DMSO

Catalyst for bioconjugate synthesis by Click Chemistry.

General properties

Appearance: yellow solid
Molecular weight: 413.38
CAS number: 510758-19-7
Molecular formula: C25H15O6N
Solubility: good in aqueous buffers (pH > 8), alcohols, DMSO, DMF
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.
MSDS: Download
Product specifications

Spectral properties

Excitation/absorption maximum, nm: 490
ε, L⋅mol−1⋅cm−1: 80000
Emission maximum, nm: 513
Fluorescence quantum yield: 0.93
CF260: 0.20
CF280: 0.17

Product citations

  1. Guarin, M.; Faelens, R.; Giusti, A.; De Croze, N.; Léonard, M.; Cabooter, D.; Annaert, P.; de Witte, P.; Ny, A. Spatiotemporal Imaging and Pharmacokinetic of Fluorescent Compounds in Zebrafish Eleuthero-Embryos After Different Routes of Administration. Research Square, preprint. doi: 10.21203/rs.3.rs-237483/v1
  2. Kamzabek, D.; Le Dé, B.; Coche-Guérente, L.; Miomandre, F.; Dubacheva, G.V. Thermoresponsive Fluorescence Switches Based on Au@pNIPAM Nanoparticles. Langmuir, 2021, 37(37), 10971–10978. doi: 10.1021/acs.langmuir.1c01397
  3. Sokolova, V.; Mekky, G.; van der Meer, S.B.; Seeds, M.C.; Atala, A.J.; Epple, M. Transport of ultrasmall gold nanoparticles (2 nm) across the blood-brain barrier in a six-cell brain spheroid model. Scientific Reports, 2020, 10, 18033. doi: 10.1038/s41598-020-75125-2
  4. Warminski, M.; Kowalska, J.; Jemielity, J. Solid-Phase Synthesis of RNA 5'-Azides and Their Application for Labeling, Ligation, and Cyclization Via Click Chemistry. Current Protocols in Nucleic Acid Chemistry, 2020, 82(1), e112. doi: 10.1002/cpnc.112
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