Organometallic small molecule kinase inhibitors - direct incorporation of Re and 99mTc into Opaganib®

[(η5-Cp)Re(I)(CO)(3)] was incorporated into the kinase inhibitor Opaganib®. The resulting bioorganometallic complex showed a similar anti-cancer activity to Opaganib® against PC-3 cancer cells. The IC(50) value for the kinase SK2 is 30x higher than that of Opaganib®. The 99mTc homologue was synthesized, completing a matched-pair for molecular theranostics.