Cy5 Amine

Unit Size
Price (USD)
Cat.#: 1323-1
Unit size: 1 mg
in stock
Cat.#: 1323-5
Unit size: 5 mg
in stock
Cat.#: 1323-25
Unit size: 25 mg
in stock
Cat.#: 1323-100
Unit size: 100 mg
in stock

Cy5 Amine is a carbonyl reactive building block used to modify carboxylic groups in the presence of activators (e.g. EDC, or DCC) or activated esters (e.g. NHS esters) through a stable amide bond. It also can be employed as a polar tracer and as a reactive dye for labeling proteins via a carboxylic acid moiety.

Cy5 Amine (also sold under the Sulfo-Cyanine5 Amine name) is a water-soluble, bright, far-red-fluorescent probe with excitation ideally suited for the 633 nm or 647 nm laser lines. A significant advantage to using long wavelength dyes such as Cy5 or AZDye 647 over other fluorophores is the low autofluorescence of biological specimens in this region of the spectrum.

Aldehyde, carboxylic acid, ketone
Abs/Em Maxima
648/671 nm
Extinction coefficient
250,000 cm-1M-1
Water, DMSO, DMF
Spectrally similar dyes
Alexa Fluor® 647, DyLight® 649,
Molecular weight
Storage conditions
Shipping conditions
Ambient temperature

Cy®Dye is a trademark of GE Healthcare.