There are several types of synthetic surfactants available, each with its specific formulations and properties. Some commonly used synthetic surfactants include: - Exosurf Neonatal: Composed of dipalmitoylphosphatidylcholine (DPPC), cetyl alcohol, and tyloxapol. - Surfaxin: Contains a synthetic peptide (KL4), which is designed to mimic the surfactant protein B (SP-B).