PromoFluor LSS Free Carboxylic Acids

Free carboxylic acid, non-activated forms of PromoFluor Dyes exhibiting an exceptional large Stokes shift.

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In addition to the standard dyes, specifically designed PromoFluor LSS dyes offer an exceptional large Stokes shift, which makes them ideally suited for multicolor labelling and flow cytometry applications.
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.