Chemical Information Catelog Number: R01-0005 Product Name: BDP 558/568 NHS ester Molecular Formula: C20H16N3BF2O4S Molecular Weight: 443.23 Purity: NMR 1H, HPLC-MS (95%) Solubility: good in DMF, DMSO, ethyl acetate CAS Number: 150173-73-2 Product Specification Appearance: dark colored solid ε, L⋅mol-1⋅cm-1: 84400 Excitation Maximum (nm): 561 Emission Maximum (nm): 569BDP 558/568 is a borondipyrromethene fluorophore with emission in the yellow part of the spectrum. Its absorption and emission spectra are in similar range as TAMRA, BDP TMR, Cyanine3, and sulfo-Cyanine3. This is an amine reactive NHS ester.