Escitalopram oxalate is the oxalate salt form of escitalopram, a selective serotonin reuptake inhibitor (SSRI) class of compounds. As a specialty chemical and active pharmaceutical ingredient (API), it is primarily used in pharmaceutical research, development, and quality control for synthesizing and analyzing antidepressant medications. It functions by selectively inhibiting the reuptake of serotonin, aiding in the study of treatments for major depressive disorder (MDD), generalized anxiety disorder (GAD), panic disorder, social anxiety disorder, and obsessive-compulsive disorder (OCD). This reagent is supplied as a white to tan powder with 98-100% purity (HPLC), conforming to structural standards via IR and NMR spectroscopy. It is not intended for direct therapeutic use but for laboratory applications, with handling requiring appropriate safety precautions due to its pharmaceutical nature.