Carboxyrhodamine 110-PEG4-DBCO is a fluorescent labeling dye. the DBCO group enables copper free Click Chemistry with azide-bearing compounds or biomolecules to form a stable triazole linkage. This reagent will be an ideal alternative to copper intolerant applications and can be used to label cells, tissues, biomarkers or nanoparticles. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.