Used as a key intermediate in the synthesis of phosphodiesterase 4 (PDE4) inhibitors, particularly in the development of anti-inflammatory drugs. It plays an important role in the creation of compounds targeting respiratory diseases such as chronic obstructive pulmonary disease (COPD) and asthma due to its ability to modulate immune cell activity. Its structure supports high selectivity and potency in inhibiting PDE4, which helps reduce inflammation without significant side effects. Also explored in the research of neurodegenerative and autoimmune disorders owing to its central nervous system penetration and immunomodulatory properties.