R-Citalopram Oxalate is the R-enantiomer of citalopram oxalate. Unlike the S-enantiomer (escitalopram), which is the active ingredient used in the treatment of depression and anxiety disorders due to its potent selective serotonin reuptake inhibition (SSRI), the R-enantiomer exhibits minimal SSRI activity. It is primarily utilized in pharmaceutical research and development as a reference standard, for studying stereospecific pharmacological effects, enantioselective synthesis, and the role of chirality in neurochemical pathways related to mood regulation. It may also serve as an intermediate in the synthesis of racemic citalopram or escitalopram.