Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the production of thiamine (vitamin B1) and related compounds. It serves as a building block in organic synthesis due to the reactivity of the thiazole ring and ester functionality, enabling the formation of more complex heterocyclic systems. Commonly employed in the development of active pharmaceutical ingredients (APIs) where thiazole derivatives exhibit biological activity, including antimicrobial and anti-inflammatory properties. Also utilized in research settings for the preparation of novel compounds in medicinal chemistry.