Adamantane-1,3-diamine is primarily utilized in the synthesis of pharmaceutical compounds due to its rigid and stable adamantane structure. It serves as a key building block in the development of antiviral drugs, particularly those targeting influenza and HIV, where its unique geometry enhances drug efficacy. Additionally, it is employed in the creation of polymers and coatings, where its structural rigidity contributes to improved thermal and chemical resistance. The compound is also explored in material science for designing advanced molecular frameworks and supramolecular assemblies. Its applications extend to catalysis, where it acts as a ligand to stabilize metal complexes in various chemical reactions.