BP Fluor 660 (almost identical to Alexa Fluor® 660 and CF660® 680RD) Acid is a bright and photostable far-red dye that emits fluorescence at about 685 nm in the borderline spectral region between far-red and near-IR. Although the absorption maximum is at around 665 nm, this dye can be sufficiently excited by the 633 or 647 nm laser. The terminal carboxylic acid can react with primary amine groups in the presence of activators such as EDC and HATU, to form stable amide bonds. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
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