The sulfonated cyanine dyes have an improved fluorescence quantum yield than the non-sulfonated cyanines. They are commercially available as Cy3^®, Cy5^®, Cy5.5^® and Cy7^®. However, these commercial protein-labeling CyDyes and Alexa Fluor^® dyes are cost-prohibitive for labeling peptides and oligonucleotides that require much larger amount of labeling dyes. The improved and affordable Tide Fluor™ dyes are optimized as building blocks for developing FRET oligonucleotides and peptides. Our Tide Fluor™ dyes have stronger fluorescence and higher photostability than the classic fluorophores (such as fluoresceins, rhodamines and cyanines). They are the best affordable fluorescent dyes for labeling peptides and oligonucleotides without comprised performance.

Tide Fluor™ dyes are a series of excellent fluorescent labeling dyes that span the full visible spectrum. Tide Fluor™ dyes have improved labeling performance than the classic fluorescent labeling dyes such as FITC, TRITC, Texas Red^®, Cy3, Cy5 and Cy7. They are the best affordable fluorescent dyes (alternative to Alexa Fluor^® dyes) for labeling oligos and peptides without comprised performance. Each Tide Fluor™ dye is developed to match the spectral properties of a particular Alexa Fluor^® or other labeling dyes (such as DyLight™ dyes).