FAM maleimide, 6-isomer

Cat. # Quantity Price Lead time
44180 25 mg $160.00 in stock
54180 50 mg $270.00 in stock
64180 100 mg $420.00 in stock

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.

Fluorescein (FAM) absorbance and emission spectra

Fluorescein (FAM) absorbance and emission spectra

Customers also purchased with this product

FAM azide, 6-isomer

FAM (fluorescein) azide, 6-isomer is a commonly used fluorescent dye azide for Click Chemistry.

Sulfo-Cyanine5.5 amine

Sulfo-Cyanine5.5 is a far red/NIR fluorophore possessing high hydrophilicity and aqueous solubility. The dye displays good brightness in far red region due to outstanding molar extinction coefficient. This is amine derivative which is reactive towards electrophiles. It can also be used for enzymatic transamination labeling.
Add this product to your cart and
get free express delivery

Cyanine5 maleimide

Cyanine5 maleimide reacts with thiols to give dye labeled conjugates.

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 maximum, nm: 494
ε, L⋅mol−1⋅cm−1: 75000
Emission maximum, nm: 520
Fluorescence quantum yield: 0.9
CF260: 0.20
CF280: 0.17

Product citations

  1. Yu, C.; Tang, J.; Loredo, A.; Chen, Y.; Jung, S.Y.; Jain, A.; Gordon, A.; Xiao, H. Proximity-Induced Site-Specific Antibody Conjugation. Bioconjugate Chemistry, 2018, 29(11), 3522–3526. doi: 10.1021/acs.bioconjchem.8b00680
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.