AF 555 NHS ester

AF 555 NHS esters Protein labeling

Cat. #	Quantity	Price	Lead time
1K820	1 mg	$140	in stock
2K820	5 mg	$450	in stock
4K820	25 mg	$1460	in stock
5K820	50 mg	$1890	in stock
6K820	100 mg	$2640	in stock

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AF 555 NHS ester is a bright, photostable, and hydrophilic fluorescent dye for the yellow channel. This NHS ester is an amine-reactive dye; it can label amine groups in proteins, peptides, amino-modified oligos, and other target molecules.

AF 555 is a hydrophilic fluorophore with high fluorescence quantum yield and high photostability, an alternative to tetramethylrhodamine (TAMRA, TMR) or Cyanine3 dyes. The dye is useful for many applications, including cytometry and microscopy.

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Absorption and emission spectra of AF 555

General properties

Appearance:	dark red powder
Molecular weight:	1058.36
Molecular formula:	C₃₉H₄₆K₃N₃O₁₆S₄
Quality control:	NMR ¹H and HPLC-MS (95+%)
Storage conditions:	12 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:	552
ε, L⋅mol⁻¹⋅cm⁻¹:	152000
Emission maximum, nm:	566
Fluorescence quantum yield:	0.14

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.