Cyanine5 DBCO Cat. # Quantity Price A30F0 1mg 1540.00 B30F0 5mg 2940.00 C30F0 10mg 4340.00 D30F0 25mg 5740.00 E30F0 50mg 9730.00 A derivative of Cyanine5 red-emitting fluorophore possessing DBCO (dibenzocyclooctyne, also known as ADIBO, azodibenzocyclooctyne) group for copper free Click chemistry. Strained cycloalkynes, such as cyclooctynes, react with azides very rapidly in the absence of copper catalyst in a strain promoted alkyne azide cycloaddition (spAAC). This reaction is very fast, mild, and biocompatible. Compared to other cycloalkynes, DBCO provide among the fastest reaction kinetics, still possessing good stability. General properties Appearance: dark blue solid Mass spec M+ increment: 928.4 Molecular weight: 929.03 Molecular formula: C53H59N4F6O2P Solubility: good in DMF, DMSO, chlorinated organic solvents Quality control: NMR 1H, HPLC-MS (95%) Storage conditions: Storage: 12 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate. Spectral properties Excitation maximum, nm: 646 ε, L⋅mol−1⋅cm−1: 250000 Emission maximum, nm: 662 Fluorescence quantum yield: 0.2 CF260: 0.03 CF280: 0.04