FAM maleimide, 6-isomer

Cat. # Quantity Price Lead time
24180 5 mg –   in stock
44180 25 mg $260 in stock
54180 50 mg $370 in stock
64180 100 mg $525 in stock
Found better price? Let us know and we will propose the way forward!

FAM (fluorescein) is a bright fluorophore which is compatible with various fluorescence detection instruments. FAM is a universal dye that is useful for microscopy, qPCR and many other methods as well as for FRET-based and fluorescence polarization based binding assays.

FAM maleimide is a thiol reactive dye for the labeling of proteins, peptides, and other thiolated molecules.

FAM absorbance and emission spectra

FAM absorbance and emission spectra

Customers also purchased with this product

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.

ROX maleimide, 5-isomer

ROX maleimide is a thiol reactive dye derivative based on isomerically bright rhodamine X fluorophore.

AF 568 azide

Azide derivative of water-soluble AF 568 dye for labeling alkyne-containing biomolecules and fluorescent visualization of biological objects. Pure 6-isomer.

General properties

Appearance: yellow solid
Mass spec M+ increment: 498.4
Molecular weight: 498.44
Molecular formula: C27H18N2O8
Solubility: good in 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. 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
CF260: 0.22
CF280: 0.17

Product citations

  1. Huang, S.; Gao, Y.; Ma, L.; Jia, B.; Zhao, W.; Yao, Y.; Li, W.; Lin, T.; Wang, R.; Song, J.; Zhang, W. Design of pH-responsive antimicrobial peptide melittin analog-camptothecin conjugates for tumor therapy. Asian Journal of Pharmaceutical Sciences, 2024, 19(1), 100890. doi: 10.1016/j.ajps.2024.100890
  2. Peterson, B. G.; Hwang, J.; Russ, J. E.; Schroeder, J. W.; Freddolino, P. L.; Baldridge, R. D. Deep Mutational Scanning Highlights a Role for Cytosolic Regions in Hrd1 Function. Cell Reports, 2023, 42(11), 113451. doi: 10.1016/j.celrep.2023.113451
  3. Kalinovsky, D. V.; Kholodenko, I. V.; Kibardin, A. V.; Doronin, I. I.; Svirshchevskaya, E. V.; Ryazantsev, D. Y.; Konovalova, M. V.; Rozov, F. N.; Larin, S. S.; Deyev, S. M.; Kholodenko, R. V. Minibody-Based and ScFv-Based Antibody Fragment-Drug Conjugates Selectively Eliminate GD2-Positive Tumor Cells. International Journal of Molecular Sciences, 2023, 24(2), 1239. doi: 10.3390/ijms24021239
  4. Visentin, A.; Demitroff, N.; Salgueiro, M.; Borkosky, S. S.; Uversky, V. N.; Camporeale, G.; de Prat-Gay, G. Assembly of the Tripartite and RNA Condensates of the Respiratory Syncytial Virus Factory Proteins In Vitro: Role of the Transcription Antiterminator M2-1. Viruses, 2023, 15(6), 1329. doi: 10.3390/v15061329
Show more (10)
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.