Notes: N-Oleoyl proline is an N-acyl amine that has been detected in bovine brain extracts and D. melanogaster larvae using mass spectrometry.{33754,33755} In a preclinical model of pain, mice lacking fatty acid amide hydrolase (FAAH KO) had decreased N-oleoyl proline levels in lumbar spinal cord after capsaicin administration (1 µg/10 µl).{33751} N-Oleoyl proline also has surfactant properties (critical micelle concentration = 4.8 µM).{33753}