Introduction: Gauzuma ulmifolia Lam. (GU) belonging to the family Malvaceae, commonly called Bastard Cedar is native to tropical American countries. It was introduced into India more than 100 years ago. Methods: In the present study, alcoholic seed extract of Gauzuma ulmifolia Lam. was subjected to GC MS/MS analysis and chemical compounds were characterized. Results: Totally sixteen compounds were characterized. Chemical analysis of the extract showed that it includes bioactive compounds like D-Asarinin (65.02 %), 2,6-Bis (3,4-methylenedioxyphenyl)-3,7-dioxabicyclo (3.3.0) octane (20.12 %), 1-Dodecanone, 2-(imidazol- 1-yl)-1-(4-methoxyphenyl) (7.54 %) and o-Anisic acid, tridec-2-ynyl ester (3.33 %) as major constituents. Minor components such as Vitamin E, γ – Tocopherol, Ergost-5-en-3-ol, (3β), Hexadecanoic acid, methyl ester is also present. Conclusion: Based on the above results, the seeds of this plant could posse’s oxygen (92.27 %), hydrocarbon (0.19 %) and nitrogen (7.54 %) derivatives of volatile principle. This is the first-time report on the composition of seed of GU.