Flamma® Fluors 581 Dichlorotriazine is a hydroxyl reactive orange fluorescent dye induced from benzindocyanine structure and used to generate a stable fluorescence signal in bioimaging. The maxima of Ex/Em values are at 578/593 nm, similar to that of Alexa 594 and DyLight 594. Flamma 581 might be excited using 561, 568 or 578 nm laser lines and displays excellent optical property. Hydroxyls irreversibly displace one of chlorines at triazine ring to yield an aryl ether linkage. Dichlorotriazines are among the few reactive groups that are reported to react directly with polysaccharides and other alcohols in aqueous solution, provided that the pH is >9 and other nucleophiles are not present. We offer Flamma Fluors 581 dichlorotriazine for labeling of polysaccharides and alcohols on biomolecules for cellular labeling and detection. 


Fluorophore: Flamma® Fluors 581

Reactive group: Dichlorotriazine

Excitation/Emission Max.(nm): 578/593 

Spectrally similar dyes: Alexa594, DyLight594

Extinction coefficient: ≥ 109,000 cm-1M-1

CF280: 0.18

Appearance: Purple Solid

Molecular Weight: 1109.10 g/mol   

Solubility: DMF, DMSO

Storage conditions: -20 ℃, protect from light

Citation & Reference

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