93-O17O is a chalcogen-containing cationic lipidoid.^1,2It has been used in the generation of lipid nanoparticles (LPNs). LPNs containing 93-O17O localize to the spleen after intravenous injection into mice.¹LPNs containing 93-O17O have been used for the delivery of Cre recombinase and ribonucleoproteins for genome editing in mice and for the intratumoral delivery of cGAMP to enhance cross-presentation of tumor antigens.^3,2

1.Zhao, X., Chen, J., Qiu, M., et al.Imidazole-based synthetic lipidoids for in vivo mrna delivery into primary T lymphocytesAngew Chem. Int. Ed. Engl.59(45)20083-20089(2020) 2.Chen, J., Qiu, M., Ye, Z., et al.In situ cancer vaccination using lipidoid nanoparticlesSci. Adv.7(19)eabf1244(2021) 3.Li, Y., Yang, T., Yu, Y., et al.Combinatorial library of chalcogen-containing lipidoids for intracellular delivery of genome-editing proteinsBiomaterials178652-662(2018)