Cyanine Dyes

Brand Name Dye  

Cy3 Acid
An improved version of Cy3 dyes with significantly increased fluorescence quantum yield and photostability.

Reactivity: Primary amine

Cy3 NHS Ester
Cy3 Acid
Orange-fluorescent dye suited for 532 nm or 555 nm laser line.
Cy®3 Dye

Reactivity: Non-activated

Cy3 Acid

Reactivity: Primary amine

Cy3 NHS Ester

Reactivity: thiol (Cys)

Cy3 Maleimide

Reactivity: Aldehyde, carboxylic acid, ketone

Cy3 Amine
Cy3 Acid
Far-red-fluorescent dye excited by the 633 nm or 647 nm laser lines.
Cy®5 Dye

Reactivity: Primary amine

Cy5 NHS Ester

Reactivity: Thiol (Cys)

Cy5 Maleimide

Reactivity: Aldehyde, carboxylic acid, ketone

Cy5 Amine
Cy3 Acid
Near-IR fluorescent dye with excitation ideally suited for the 633 nm laser line.
Cy®5.5 Dye

Reactivity: Primary amine

Cy5.5 NHS Ester

Reactivity: Thiol (Cys)

Cy5.5 Maleimide

Reactivity: Alkyne, cyclooctyne

Cy5.5 Azide

Reactivity: Alkyne, cyclooctyne

Cy5.5 Picolyl Azide

Reactivity: Azide, picolyl azide

Cy5.5 DBCO

Reactivity: Azide, picolyl azide

Cy5.5 Azide
Cy3 Acid
Highly hydrophilic orange-fluorescent dye.
Sulfo Cy®3 Dye

Reactivity: Primary amine

Cy3 NHS Ester

Reactivity: Alkyne, cyclooctyne

Cy3 Azide

Reactivity: Alkyne, cyclooctyne

Cy3 Azide

Reactivity: Azide, picolyl azide

Cy3 DBCO

Reactivity: Azide, picolyl azide

Cy3 Alkyne
Cy3 Acid
Highly hydrophilic far-red-fluorescent dye excited by the 633 nm or 647 nm laser lines.
Sulfo Cy®5 Dye

Reactivity: Primary amine

Cy5 NHS Ester

Reactivity: Primary amine

Cy5 NHS Ester

Reactivity: Thiol (Cys)

Cy5 Maleimide

Reactivity: Alkyne, cyclooctyne

Cy5 Azide

Reactivity: Alkyne, cyclooctyne

Cy5 Picolyl Azide

Reactivity: Azide, picolyl azide

Cy5 DBCO

Reactivity: Azide, picolyl azide

Cy5 Alkyne