AF 647 carboxylic acid

AF 647 Carboxylic acids

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.

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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, 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

Product citations

Herkert, E.K.; Lau, L.; Pons Lanau, R.; Garcia-Parajo, M.F. Hexagonal Plasmonic Arrays for High-Throughput Multicolor Single-Molecule Studies. ACS Applied Materials & Interfaces, 2024, 16(31), 41271-41280. doi: 10.1021/acsami.4c04744

This Product is offered and sold for research purposes only. It has not been tested for safety and efficacy in food, drug, medical device, cosmetic, commercial or any other use. Supply does not express or imply authorization to use for any other purpose, including, without limitation, in vitro diagnostic purposes, in the manufacture of food or pharmaceutical products, in medical devices or in cosmetic products.