N4-Acetylcytidine (CAS No 3768-18-1) is a nucleoside modification primarily studied within the field of biomedical research particularly in RNA biology and epitranscriptomics Originating from cytidine it acts by influencing RNA stability and function contributing to RNA processing and gene expression regulation Its mechanism of action involves participation in pathways related to RNA metabolism and cellular stress responses In vitro studies have demonstrated activity in the nanomolar to low micromolar range depending on the system evaluated N4-Acetylcytidine is typically utilized in cell models to study RNA modification processes and can also be applied in animal studies to track RNA dynamics Additionally it serves a role in drug screening aimed at identifying potential therapeutic agents targeting RNA modification pathways Experimental concentrations typically depend on the specific research design