3-Oxo-1,3-Dihydroisobenzofuran-1-Carbonitrile

Cyanophthalide has significant applications in pharmaceutical chemistry:

• Intermediate for Antidepressants: It is primarily used in the synthesis of Citalopram and its active enantiomers, which are crucial for treating depression.
• Chemical Research: Its unique structure allows it to serve as a building block for various chemical compounds in research settings.

Cyanophthalide exhibits biological activity primarily as a precursor in the synthesis of Citalopram, which is used to treat major depressive disorder. While direct biological effects of cyanophthalide itself are less documented, its derivatives have been shown to influence serotonin reuptake mechanisms, contributing to their antidepressant effects.

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