Used as an intermediate in the synthesis of pharmaceuticals, particularly in the production of active pharmaceutical ingredients (APIs) involving piperazine derivatives. It plays a key role in forming compounds with biological activity, such as antipsychotics, antidepressants, and antihistamines. Its reactive aldehyde group allows for easy modification in multi-step organic syntheses, making it valuable in drug development and medicinal chemistry research. Also utilized in the preparation of agrochemicals and specialty chemicals where functionalized heterocycles are required.