AF 555 carboxylic acid

AF 555 Carboxylic acids

Cat. #	Quantity	Price	Lead time
1K890	1 mg	$125	in stock
2K890	5 mg	$325	in stock
4K890	25 mg	$950	in stock
5K890	50 mg	$1625	in stock
6K890	100 mg	$2090	in stock

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Items in stock will be shipped on 03/31/2025

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AF 555 is a hydrophilic fluorophore with high fluorescence quantum yield and high photostability, an alternative to tetramethylrhodamine (TAMRA, TMR) or Cyanine3 dyes.

AF 555 carboxylic acid is a non-reactive form of AF 555 dye that can be used as a reference standard in experiments involving AF 555 dye conjugates. Besides, the carboxylic group can react with hydrazines, hydroxylamines, and amines using carbodiimides such as EDAC.

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Absorption and emission spectra of AF 555

General properties

Appearance:	green red powder
Molecular weight:	961.29
Molecular formula:	C₃₅H₄₃K₃N₂O₁₄S₄
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:	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.