Optical imaging sampler(56-FAM-RIS (24 nmol) + 56-ROX-RIS (24 nmol)),This sampler kit includes two economical imaging probes: 5(6)-ROX-RIS and 5(6)-FAM-RIS. Both probes are fluorescent conjugates of risedronate, a widely used bisphosphonate drug in clinical applications. The probes have different spectroscopic properties and can be used for optical microscopy imaging.n nSpectroscopic properties of 5(6)-ROX-RIS:nMaximum absorption wavelength (λmax (abs)): 580 nmnMaximum emission wavelength (λmax (em)): 605 nmnExtinction coefficient (M-1cm-1): 73,000 (0.1 M phosphate buffer, pH 8.0)n nSpectroscopic properties of 5(6)-FAM-RIS:nMaximum absorption wavelength (λmax (abs)): 493 nmnMaximum emission wavelength (λmax (em)): 518 nmnExtinction coefficient (M-1cm-1): 73,000 (0.1 M phosphate buffer, pH 7.2)