3-Amino-1,2-propanediol, with the chemical formula C3H9NO2, is a key compound used in organic synthesis and pharmaceutical applications. As a colorless liquid, it contains an amino group and hydroxyl groups on a three-carbon chain, serving as a versatile building block for creating complex organic molecules. Its reactivity allows for biomolecule modification and functional group introduction, contributing to its role in drug discovery and medicinal chemistry.