AF568 NHS ester

Cat. # Quantity Price Lead time
14820 1 mg $110.00 in stock
24820 5 mg $290.00 in stock
44820 25 mg $690.00 in stock
54820 50 mg $1270.00 in stock
64820 100 mg $1990.00 in stock

AF568 is a synthetic fluorophore structurally and functionally identical to Alexa Fluor™ 568, a member of the well-known Alexa Fluor™ family of fluorescent dyes. The excitation peak of AF568 lies at 572 nm and its emission peak is at 598 nm. It can be excited using a 561 nm laser. AF568 is spectrally similar to Texas Red, TF4 (Tide Fluor™ 4), and sulfo-Cyanine3.5 dyes.

As AF568 NHS Ester can be conjugated with proteins and peptides, it is recommended for stable signal generation in imaging, including Western Blotting, fluorescence microscopy, and flow cytometry.

Absorption and emission spectra of AF568

Absorption and emission spectra of AF568

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General properties

Appearance: dark colored solid
Mass spec M+ increment: 676.1
Molecular weight: 994.18
Molecular formula: C49H63N5O13S2
Solubility: good in water, DMSO, DMF
Quality control: NMR 1H, HPLC-MS (95%)
Storage conditions: Storage: 12 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: 572
ε, L⋅mol−1⋅cm−1: 94238
Emission maximum, nm: 598
Fluorescence quantum yield: 0.912
CF260: 0.4
CF280: 0.32
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