Used as a key intermediate in the synthesis of opioid receptor ligands, particularly in the development of analgesic drugs. Its stereochemistry allows for selective interaction with biological targets, enhancing potency and reducing side effects. Employed in research settings to explore pain modulation pathways and to design novel therapeutics for chronic pain management. Also utilized in medicinal chemistry for structure-activity relationship (SAR) studies due to its rigid morpholinone core and chiral centers.