Used as a key intermediate in the synthesis of complex organic molecules, particularly in pharmaceuticals and agrochemicals. Its aldehyde functionality allows for versatile transformations such as Wittig reactions, reductions, and nucleophilic additions, enabling the construction of carbon-carbon bonds. The chloro group provides a site for cross-coupling reactions like Suzuki or Heck couplings, facilitating the introduction of aromatic or vinyl substituents. The tert-butyldimethylsilyl (TBS) protected alcohol offers stability during reaction sequences and can be selectively deprotected to reveal a hydroxyl group for further modification. This combination of functional groups makes it valuable in multi-step syntheses, especially in the development of bioactive compounds where precise structural control is required.