Used as a key intermediate in the synthesis of Ritonavir, a potent antiretroviral medication employed in the treatment of HIV infection. It plays a critical role in constructing the core structure of Ritonavir, enabling the formation of the thiazole-containing moiety essential for the drug’s activity. This intermediate allows for efficient coupling and functional group transformations during the multi-step manufacturing process, contributing to high yield and purity in the final active pharmaceutical ingredient. Its use is primarily confined to controlled laboratory and industrial settings for pharmaceutical production.