AF 488 alkyne

Cat. # Quantity Price Lead time
A18B0 1 mg $125 in stock
B18B0 5 mg $325 in stock
D18B0 25 mg $950 in stock
E18B0 50 mg $1625 in stock
F18B0 100 mg $2090 in stock
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Alkyne derivative of AF 488 dye for copper-catalyzed cycloaddition to azides (CuAAC). AF 488 alkyne is used for fluorescent labeling of azidated biomolecules, polymers, and surfaces. AF 488 is sulfonated rhodamine, a bright, photostable, and hydrophilic fluorophore that emits in the green channel (absorption max. is at 495 nm, emission max. is at 519 nm).

Absorption and emission spectra of AF 488

Absorption and emission spectra of AF 488

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General properties

Appearance: orange solid
Molecular weight: 647.72
Molecular formula: C24H15K2N3O10S2
Quality control: NMR 1H and HPLC-MS (95+%)
Storage conditions: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Desiccate. Avoid prolonged exposure to light.
MSDS: Download
Product specifications

Spectral properties

Excitation/absorption maximum, nm: 495
ε, L⋅mol−1⋅cm−1: 71800
Emission maximum, nm: 519
Fluorescence quantum yield: 0.91
CF260: 0.16
CF280: 0.10
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