FAM alkyne, 5-isomer

Cat. # Quantity Price Lead time
A41B0 1 mg –   in stock
B41B0 5 mg $100 in stock
C41B0 10 mg $150 in stock
D41B0 25 mg $295 in stock
E41B0 50 mg $450 in stock
F41B0 100 mg $780 in stock
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FAM (fluorescein) alkyne for copper-catalyzed click chemistry, high purity (97+%) 5-isomer. The compound possesses significant aqueous solubility.

Absorbance and emission spectra of FAM

Absorbance and emission spectra of FAM

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FAM tetrazine, 6-isomer

This molecule is a conjugate of bright fluorophore FAM (fluorescein) and tetrazine, a reactive group that reacts with trans-cycloalkenes in a reaction called IEDDA (inverse electron demand Diels-Alder reaction).

General properties

Appearance: yellow solid
Molecular weight: 413.38
CAS number: 510758-19-7
Molecular formula: C24H15O6N
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: 492
ε, L⋅mol−1⋅cm−1: 74000
Emission maximum, nm: 517
Fluorescence quantum yield: 0.93
CF260: 0.22
CF280: 0.17

Product citations

  1. Cardenas, A.J.; Thomas, K.S.; Broden, M.W.; Ferraro, N.J.; John, C.M.; Pires, M.M.; Jarvis, G.A.; Criss, A.K. Neisseria gonorrhoeaescavenges host sialic acid for Siglec-mediated, complement-independent suppression of neutrophil activation. bioRxiv, 2024, preprint. doi: 10.1101/2024.01.17.576097
  2. Wang, Y.-J.; Li, L.; Yu, J.; Hu, H.-Y.; Liu, Z.-X.; Jiang, W.-J.; Xu, W.; Guo, X.-P.; Wang, F.-S.; Sheng, J.-Z. Imaging of Escherichia Coli K5 and Glycosaminoglycan Precursors via Targeted Metabolic Labeling of Capsular Polysaccharides in Bacteria. Sci. Adv., 2023, 9(7), eade4770. doi: 10.1126/sciadv.ade4770
  3. 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. Scientific Reports, 2021, 11(1), 12229. doi: 10.1038/s41598-021-91612-6.
  4. 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
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