Cy3 Acid
An amine-reactive, non-activated fluorescent reagent.
1mg | £126.00 | |
5mg | £354.00 | |
25mg | £840.00 | |
100mg | £2,100.00 |
Cy®3 is a bright, water-soluble, and pH insensitive orange-fluorescent dye that can be excited using the 532nm or 555nm laser line and visualised with TRITC (tetramethylrhodamine) filter sets. Cy3 conjugates give less background than TAMRA and most other commonly used fluorescent dyes.
This sulfonated dye is also known as sulfo-Cyanine3 Acid. Cy® Dye is a trademark of GE Healthcare.

550/570nm
150,000
532 or 555nm
532 or 555nm
TAMRA, Alexa Fluor® 555, Atto™ 555, CF™ 555 Dye, DyLight™ 549
638.17
N/A
Water, DMF, DMSO, MeOH
>95% (HPLC)
Red solid
-20°C
Room Temperature