Chemists have developed a strategy using disulfide-containing small molecules to facilitate the reversible control and delivery of ribonucleic acid (RNA). A research team has developed a method that takes advantage of a chemical process called post-synthetic RNA acylation chemistry, and combined it with dynamic disulfide exchange reaction for RNA delivery and reversible control. This method provides a way to mask the RNA molecule, and researchers can potentially regulate its activity and delivery until it reaches its target site within the cell.