Sulfo Cy3 Alkyne

Unit Size
Price (USD)
Cat.#: 1306-1
Unit size: 1 mg
in stock
Cat.#: 1306-5
Unit size: 5 mg
in stock
Cat.#: 1306-25
Unit size: 25 mg
in stock
Cat.#: 1306-100
Unit size: 100 mg
in stock

Sulfo-Cy3 Alkyne is a bright, water-soluble, and pH insensitive from pH 4 to pH 10 orange-fluorescent dye. Sulfo-Cy3 conjugates of antibodies, peptides, and proteins can be excited using the 532 nm or 555 nm laser line and visualized with TRITC (tetramethylrhodamine) filter sets. Cy3 conjugates give less background than TAMRA and most other commonly used fluorescent dyes.

Sulfo-Cy3 Alkyne is a bright, orange-fluorescent, pH insensitive alkyne-activated probe routinely used for imaging of azide-containing biomolecules. Sulfo-Cy3 Alkyne reacts with azides via a copper-catalyzed click reaction (CuAAC) to form a stable triazole linker. A probe for copper-less detection (Sulfo-Cy3 DBCO) is also available for application where the presence of copper is not acceptable.

Azide, picolyl azide
Abs/Em Maxima
555/572 nm
Extinction coefficient
150,000 cm-1M-1
Water, DMSO, DMF
Spectrally similar dyes
Cy3, DyLight® 555, Alexa Fluor® 555
Molecular weight
Storage conditions
Shipping conditions
Ambient temperature

Cy®Dye is a trademark of GE Healthcare.