PromoFluor NIR Free Carboxylic Acids

Near infrared Free carboxylic acid, non-activated forms of PromoFluor Dyes.

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PromoFluor-670, PromoFluor-680, PromoFluor-700, PromoFluor-750, PromoFluor-770, PromoFluor-780 and PromoFluor-840 are next-generation long wavelength dyes representing a true breakthrough in the field. Other near-IR dyes suffer from problems of limited fluorescence brightness due to excessive dye aggregation and poor stability. The high water solubility of PromoFluor dyes means that a high dye-to-protein ratio can be attained without causing precipitation of the conjugates. PromoFluor NIR dyes are superior alternatives to the respective Alexa Fluor near-infrared dyes.
The Carboxylic (Free) Acids are non-activated forms of our PromoFluor Dyes for use as controls and calibration factors in fluorescence imaging applications (e.g. for calculating background noise). These non-activated fluorescent dyes contain the native carboxyl group of the standard dye molecule.