D-erythro-sphinganine (C17 base) is primarily used in biochemical and cellular research as a key intermediate in the study of sphingolipid metabolism. It plays a crucial role in understanding the biosynthesis and function of sphingolipids, which are essential components of cell membranes and signaling molecules. Researchers utilize it to investigate pathways involved in cell growth, differentiation, and apoptosis. Additionally, it is employed in the development of therapeutic strategies targeting diseases related to sphingolipid dysregulation, such as cancer, neurodegenerative disorders, and metabolic syndromes. Its application extends to the synthesis of more complex sphingolipids for experimental and diagnostic purposes.