Science, Tech, Math › Science Chemical Structures Starting with the Letter U Share Flipboard Email Print Science Chemistry Molecules Basics Chemical Laws Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated November 05, 2019 01 of 17 Urea Urea is an organic molecule that is also know as diaminomethanal or carbamide. It was the first organic molecule to be artificially synthesized. Ben Mills Browse structures of molecules and ions that have names beginning with the letter U. Urea has the molecular formula (NH2)2CO. 02 of 17 Uridine Chemical Structure This is the chemical structure of uridine. Todd Helmenstine The molecular formula for uridine is C9H12N2O6. 03 of 17 Ursane Chemical Structure Terpene This is the chemical structure of ursane. Todd Helmenstine The molecular formula for ursane is C30H52. 04 of 17 Urushiol Chemical Structure Urushiol is the allergenic oil found in poison ivy, poison oak, poison sumac, and the skin of mangoes. Calvero, Wikipedia Commons Urushiol consists of a catechol molecule attached to an alkyl chain at R. 05 of 17 Uracil Chemical Structure This is the chemical structure of uracil. NEUROtiker/PD The molecular formula for uracil is C4H4N2O2. 06 of 17 Uranium Hexafluoride This is the three-dimensional crystal structure for uranium hexafluoride. Ben Mills 07 of 17 Uranium Hexafluoride This is the three-dimensional structure of uranium hexafluoride. Ben Mills The formula for uranium hexafluoride is UF6. 08 of 17 Uridine Chemical Structure This is the chemical structure of uridine. Todd Helmenstine The molecular formula for uridine is C9H12N2O6. 09 of 17 Umbelliferone Chemical Structure This is the chemical structure of umbelliferone. Yikrazuul/PD The molecular formula for umbelliferone is C9H6O3. 10 of 17 Undecanol Chemical Structure This is the chemical structure of undecanol. Edgar181/PD The molecular formula for undecanol is C11H24O. 11 of 17 Undecane Chemical Structure This is the chemical structure of undecane. Todd Helmenstine The molecular formula for undecane is C11H24. 12 of 17 Urea Chemical Structure This is the chemical structure of urea. Ben Mills/PD The molecular formula for urea is CH4N2O. 13 of 17 Urethane Chemical Structure This is the chemical structure of urethane. Ben Mills/PD The molecular formula for urethane, also known as ethyl carbamate, is C3H7NO2. 14 of 17 Uric Acid Chemical Structure This is the chemical structure of uric acid. NEUROtiker/PD The molecular formula for uric acid is C5H4N4O3. 15 of 17 Usnic Acid Chemical Structure This is the chemical structure of usnic acid. Fvasconcellos/PD The molecular formula for usnic acid is C18H16O7. 16 of 17 Uranin Chemical Structure This is the chemical structure of uranin. Todd Helmenstine The molecular formula for uranin is C20H12O5. 17 of 17 Uranium Tetrafluoride This is the crystal structure of uranium tetrafluoride or uranium(IV) fluoride. A. C. Larson, R. B. Roof Jnr and D. T. Cromer, Creative Commons Uranium tetrafluoride or uranium(IV) fluoride also is known as green salt. Its molecular formula is UF4. Cite this Article Format mla apa chicago Your Citation Helmenstine, Anne Marie, Ph.D. "Chemical Structures Starting with the Letter U." ThoughtCo, Aug. 27, 2020, thoughtco.com/chemical-structures-starting-with-the-letter-u-4071305. Helmenstine, Anne Marie, Ph.D. (2020, August 27). Chemical Structures Starting with the Letter U. Retrieved from https://www.thoughtco.com/chemical-structures-starting-with-the-letter-u-4071305 Helmenstine, Anne Marie, Ph.D. "Chemical Structures Starting with the Letter U." ThoughtCo. https://www.thoughtco.com/chemical-structures-starting-with-the-letter-u-4071305 (accessed January 28, 2021). copy citation