Carboxyrhodamine 110 PEG4 Acid

Unit Size
Price (USD)
Cat.#: 1687-100
Unit size: 100 mg
in stock
Cat.#: 1687-500
Unit size: 500 mg
in stock
Cat.#: 1687-1G
Unit size: 1 g
in stock
Cat.#: 1687-5G
Unit size: 5 g
in stock

Carboxyrhodamine 110 (also known as Rhodamine Green™ Carboxylic Acid) is the nonsulfonated analog of the Alexa Fluor® 488 dye. The amine-reactive Carboxyrhodamine 110 LC can be used to create bright and photostable green-fluorescent bioconjugates with excitation/emission maxima ~502/527 nm. For many applications, the dye is preferred over carboxyfluorescein or FITC because of its exceptional photostability and fluorescence insensitivity to pH (4-9).

This reagent is supplied as Boc protected derivative to ensure compatibility with Fmoc solid phase peptide synthesis. The hydrophilic spacer arm contains a hydrophilic, 4-unit, polyethylene glycol (PEG) group imparts water solubility of the labeled peptide resulting in less aggregation when stored in aqueous solution. Spacers of different lengths are available upon request.

Primary amine
Abs/Em Maxima
502/527 nm
Extinction coefficient
76,000 cm-1M-1
Spectrally similar dyes
Alexa Fluor® 488, DyLight® 488, Fluorescein, Oregon Green 488
Molecular weight
Storage conditions
Shipping conditions
Ambient temperature