AF 647 carboxylic acid

Cat. # Quantity Price Lead time
16890 1 mg $140 in stock
26890 5 mg $420 in stock
46890 25 mg $1365 in stock
56890 50 mg $1790 in stock
66890 100 mg $2640 in stock
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AF 647 is a bright, photostable, and hydrophilic fluorophore emitting in the far-red channel (absorption max. is at 650 nm, emission max. is at 671 nm). AF 647 carboxylic acid is a water-soluble dye that can be used as a reference standard and, after activation, for synthesizing AF 647-containing biomolecules.

Absorption and emission spectra of AF 647

Absorption and emission spectra of AF 647

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General properties

Appearance: golden blue solid
Molecular weight: 959.26
Molecular formula: C35H41N2K3O14S4
IUPAC name: 3-(4-carboxybutyl)-2-((1E,3E)-5-((E)-3,3-dimethyl-5-sulfonato-1-(3-sulfonatopropyl)indolin-2-ylidene)penta-1,3-dien-1-yl)-3-methyl-1-(3-sulfonatopropyl)-3H-indol-1-ium-5-sulfonate
Solubility: good in DMSO, DMF, water
Quality control: NMR 1H, HPLC-MS (95%)
Storage conditions: 12 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: 655
ε, L⋅mol−1⋅cm−1: 191800
Emission maximum, nm: 680
Fluorescence quantum yield: 0.15
CF260: 0.09
CF280: 0.08
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