Celsia coromandeliana, Vahl Syn. Verbasum coromandelianum, (Vahl) Kuntze seed oil was found to contain 22.0% 9-hydroxyoctadec-cis-12-enoic acid (isoricinoleic acid) previously unknown in the Scrophulariaceae plant family. It also consists of other normal fatty acids such as lauric acid (1.3%), myristic acid (2.6%), palmitic acid (8.2%), stearic acid (3.2%), oleic acid (17.2%), and linoleic acid (45.5%). The identification and characterization were based on UV, FTIR, H-1 NMR, and mass spectra, GLC analysis, and chemical degradations.