AF 555 carboxylic acid

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
Found better price? Let us know and we will propose the way forward!

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.

Absorption and emission spectra of AF 555

Absorption and emission spectra of AF 555

Customers also purchased with this product

AF 568 carboxylic acid

Non-reactive form of AF 568 fluorescent dye with a free carboxyl group.

TAMRA carboxylic acid, 5-isomer

Non-reactive form of TAMRA fluorescent dye with a free carboxyl group. Pure 5-isomer.

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
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.