Used as a key intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the preparation of water-soluble prodrugs due to its polar and biodegradable characteristics. Its ether-linked carboxylic acid structure enhances solubility and metabolic stability, making it valuable in modifying active compounds for improved bioavailability. Also employed in the production of specialty polymers and surfactants where moderate hydrophilicity and chemical stability are required. Additionally, it serves as a building block in conjugation chemistry for PEG-like linkers in biotechnology applications.