Used as an intermediate in the synthesis of various pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs). It plays a role in the production of compounds with potential therapeutic applications, such as anti-inflammatory, antiviral, or anticancer agents. Additionally, it is utilized in organic chemistry research for constructing complex molecules due to its reactive aldehyde and chloro groups, which facilitate further chemical modifications. Its methoxy group also contributes to its utility in creating structurally diverse compounds for drug discovery and development.