UBQ-1 is a dark quencher with a polyaromatic-azo backbone, exhibiting no native emission. It quenches fluorescence in the 480-580 nm range, making it ideal for qPCR probes and FRET applications with green to yellow dyes like FAM, Oregon Green®, TET, JOE, HEX, Alexa Fluor® 488, and DyLight® 488.
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