Sedanolide is a phthalide-like compound with the molecular formula C12H18O2.It is reported that sedanolide is one of flavor constituents of celery oil from fresh celery.3-ButylphthalideSedanenolide Sedanolide is a phthalide-like compound with the molecular formula C12H18O2.It is reported that sedanolide is one of flavor constituents of celery oil from fresh celery.