C23H29FN2O explained

The molecular formula C₂₃H₂₉FN₂O may refer to:

• 4-Fluorobutyrfentanyl, opioid analgesic and analog of butyrfentanyl; has been sold online as a designer drug
• 4-Fluoroisobutyrfentanyl, opioid analgesic, analog of butyrfentanyl, and structural isomer of 4-Fluorobutyrfentanyl; has been sold online as a designer drug
• XEN1101, an experimental anticonvulsant drug